SWAROVSKI BIRDING COMMUNITY E-BULLETIN
DEVELOPMENTS WITHIN THE NORTH AMERICAN SWAROVSKI BIRDING COMMUNITY
*Information, communication, and inspiration on birds, wildlife, and nature*
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May 2005
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MAY
JOY
For
many of us, May is perhaps the finest month of the year - a month
of great birding and great opportunities. A number of important
days are regularly scheduled in May, too - birding Big Days, International
Migratory Bird Day (IMBD), Mother's Day, Memorial Day, and even
Keep Your Cat Indoors Day!
May
is also "American Wetlands Month," when Americans are invited to
celebrate and focus on the economic benefits that wetlands provide.
The Environmental Protection Agency has joined with other Federal,
State, and local agencies to recognize the marvelous ways that wetlands
enrich the environment and society. Similar to IMBD, wetland events
are scheduled all across the country to help educate and involve
Americans in better understanding the importance of one of Earth's
most valuable and fragile ecosystems. This is particularly meaningful,
when it is remembered that in the lower 48 United States over half
of our original wetlands have been lost or converted to other uses.
Click here for more
information.
Also,
click here to obtain information
about IMBD.
The
E-bulletin is distributed as a joint effort between Swarovski Optik
of North America (SONA) and the National
Wildlife Refuge Association (NWRA). You can access an archive
of past E-bulletins on the NWRA site.
If
you wish to distribute all or parts of any of the E-bulletins, we
request that you mention the source of any material used. (Include
the URL and the E-bulletin archive if possible.) Most importantly,
if you have friends who want to get onto the E-bulletin mailing
list, have them contact either:
Wayne
Petersen 781/293-9730, wayne.petersen@swarovskibirding.com
OR Paul Baicich 410/992-9736, paul.baicich@swarovskibirding.com
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RARITY
FOCUS
We
were set to profile two wonderful Flame-colored Tanagers that were
found last month at Madera Canyon in southeast Arizona as the rarity
focus for April. Far more important bird events took precedence,
however!
Toward
the end of April, exciting rumors began spreading about the possible
existence of Ivory-billed Woodpecker in a remote section of Arkansas
bottomland forest. Increasingly convincing stories started to rocket
across the Internet, culminating in an official announcement originally
intended for mid-May, but ultimately delivered on 28 April. When
the event was finally announced at a press conference at the Department
of the Interior in Washington DC, the birding world was at once
both ecstatic and stunned.
The
details of how the bird was discovered, how the secret was maintained,
and how the organized searches for the species were conducted have
now been widely played in the media. From radio interviews and television
spots, to the recent publication of THE GRAIL BIRD (Houghton Mifflin
2005), a book by Tim Gallagher (one of the Cornell Lab of Ornithology
staff who actually saw the bird), the birding community (and the
general public) undoubtedly know more about the Ivory-billed Woodpecker
than ever before in the history of the planet! Most encouraging
amid all the recent publicity is the implication that there could
actually be a population of these birds in Arkansas. In the words
of John Fitzpatrick, director of the Cornell Lab of Ornithology,
"We've passed the bottleneck," and are in a situation where habitat
for the bird "can only get better."
One
little-appreciated aspect of the Ivory-billed story has been that
the Migratory Birding Hunting and Conservation [Duck] Stamp has,
since 1986, been a major contributor to acquiring habitat at the
core site, Cache River National Wildlife Refuge. (So much for the
Stamp being "just for ducks.")
Although
a great deal has recently been written about the Ivory-bill, the
bottom line is that in order to ensure the ultimate survival of
the bird, the management of the species will have to be a collective
effort on the part of leaders from a number of agencies and organizations,
including the Cornell Lab of Ornithology, The Nature Conservancy,
the US Fish and Wildlife Service (especially staff involved with
the Refuge System and Endangered Species), the Arkansas Game and
Fish Commission, the U.S. Department of Agriculture, and many others.
Teamwork and cooperation are absolutely essential if the species
is ever to survive.
In
line with this reality, there needs to be concern over "loving the
Ivory-billed Woodpecker to death," as noted by Secretary of the
Interior, Gale Norton, at the Washington, DC press conference. There
are undoubtedly already birders obsessing over how to see the bird.
While catching sight of an Ivory-billed Woodpecker might be the
ultimate dream of many birders, a considerable amount of restraint
needs to be exercised at this point. Rather than fixating over observing
the bird, it would be far more appropriate right now to focus on
developing strategies for preserving the bird and its habitat.
"Our
next step to recover the bird must be as patient and thoughtful
as the collection of evidence to confirm the existence of the bird,"
Secretary of the Interior Gale Norton said. "As we learn more, we
will adjust our cooperative management effort." And she's absolutely
correct.
Among
many key tasks, the Corridor of Hope Cooperative Conservation team
and the technical experts assigned to assist them have been asked
to "develop and implement plans to manage visitor access. . . The
conservation team will carefully evaluate management actions for
public access to ensure opportunities to see the areas where the
bird has been sighted and to facilitate research without jeopardizing
its survival."
Since
Ivory-bills have seemingly been able to hold out in remote Arkansas
(i.e., Cache River and White River NWRs and surrounding areas) for
decades, perhaps there is a chance that with man's help, they will
continue to live and breed (and perhaps even spread) in the future,
if they remain relatively unmolested.
Although
there are already a number of web sites devoted to the wonder, appreciation,
and survival of this most spectacular of woodpeckers, we especially
recommend that all readers of the E-Bulletin visit these two: The
Big Woods Conservation Partnership and NWRA's Lessons
of the Ivory-billed Woodpecker.
And
while you are cheering for the recovery of the Ivory-billed Woodpecker,
we encourage you to also track the future of other bird rarities,
possibly closer to home. A great place to begin your vicarious search
is the new North American
Rare Bird Alert (NARBA) Gallery of recent rare birds. It's a
feast for the eyes and for the imagination. There's lots of wonderful
birding out there, so have a look.
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WOODCOCK
CONSERVATION PLAN
In
2002, the Migratory Shore and Upland Game Bird Working Group of
the International Association of Fish and Wildlife Agencies (IAFWA)
formed a Woodcock Task Force to address long-term declines in American
Woodcock populations. The Task Force is currently developing a Woodcock
Conservation Plan with specific recommendations and action plans
for reversing the decline of this species' population.
Both
the short- and long-term objectives of the plan are aimed at halting
the decline of American Woodcock populations by the year 2012, along
with achieving positive population growth by 2022. Biologists have
witnessed annual long-term declines of 2.1% in the East, and 1.8%
in the center of the country since surveys began in the late 1960s.
It is widely believed that the loss of old field and early-succession
forest habitat is the main cause of these decreases. A draft recovery
and management plan is scheduled for completion this summer. For
further information, contact James Kelley at james_r_kelley@fws.gov.
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CATS
INDOORS... OR ELSE!
We
mentioned above that National Keep Your Cat Indoors Day occurs on
14 May. But a different kind of cat-related news crackled last month
with reports from Wisconsin on efforts to make feral cats an unprotected
species in the state. Apparently, some residents in that state have
had their fill of free-roaming cats, especially those that visit
residential bird feeders.
The
Wisconsin proposal would allow people with a valid small game license
to shoot any free-roaming cat (in rural areas), either not under
an owner's direct control or without a collar. By a vote of 6,830
to 5,201, Wisconsin residents approved the proposal at statewide
hearings of the Wisconsin Conservation Congress, a citizen's advisory
group. Before the proposal can take effect, the state legislature
would have to pass a law, and the law would have to be signed by
Governor Jim Doyle. However, the governor told the media, "I don't
think Wisconsin should become known as a state where we shoot cats."
Interestingly, however, both Minnesota and South Dakota have had
similar statutes in effect for many years. Click
here for more details.
The
Wisconsin controversy clearly illustrates that the issue of how
to humanely manage the nation's stray and feral cat populations
remains a complex, emotional, and strongly divisive issue. There
are no simple solutions. This most recent action may encourage more
people in Wisconsin to embrace a stronger "cats indoors" policy,
without actually declaring an open season on feline residents.
Finally,
since National Keep Your Cat Indoors Day is 14 May, it might be
an excellent time to publicize the day in your local community or
state. The opportunities for publicity, including a children's poster
competition, at the community or state level are considerable. For
example, the Minnesota Department of Natural Resources Nongame Wildlife
Program has sponsored a statewide competition for the past two years.
They awarded prizes to 45 regional and 3 state winners. Articles
announcing the competition appeared in many newspapers across the
state, and stories ran about the winners in the media. Visit
here to see a sample competition announcement and press release.
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REDUCING POWERLINE BIRD KILLS
In
line with this year's theme for IMBD - birds and collisions - we
draw your attention to an agreement reached last month between the
Edison Electric Institute, Avian Power Line Interaction Committee,
National Rural Electric Cooperative Association, and the U.S. Fish
and Wildlife Service (USFWS). This agreement is aimed at encouraging
utility companies to take steps to reduce harm to birds that might
come in contact with power lines.
Under
the terms of the agreement, electric power companies are urged to
develop and implement avian protection plans (APP) that will specifically
address construction design and line-siting standards to better
protect birds.
Electrocutions
are a particular threat to birds with large wingspans, such as eagles,
hawks, and even the larger owls. In addition, wire strikes are a
problem for many different bird species. "For an electric utility,
launching a comprehensive, long-term APP is not just good for the
environment, it's good for business," said Quin Shea, executive
director, environmentfor the Edison Electric Institute, an organization
which represents investor-owned utilities. "Outages that occur as
a result of birds and other animals coming into contact with power
lines or electric infrastructure are costly to both customers and
the companies themselves."
The
latest industry guidelines for preventing avian power line interactions
are available here.
Among
other things the agreement includes corporate commitment to protect
migratory birds, training in avian protection, permit compliance
guidelines, risk assessment issues, mortality reduction measures,
and public awareness and education. This cooperative network has
a long history of working together on avian power line issues (e.g.,
in 1983, an associated ad hoc group began addressing Whooping Crane
collisions with power lines in the Rocky Mountains).
More
information on powerline issues can be found here.
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WATCH
THE HORICON MARSH WIND-POWER SITUATION
On
another power issue, Americans will increasingly be faced with the
option of wind-power, especially as the price of electricity generated
by wind-turbines decreases and the spread of wind-farms increases.
The growth of wind-power is potentially very beneficial since clean,
renewable, energy is both attractive and desirable, especially in
light of our ongoing dependence on troublesome fossil fuels. Unfortunately,
much remains unknown about the impact of wind-power on wildlife,
especially birds.
A proposed
wind energy generating facility in Wisconsin has especially drawn
recent notice. This proposal entails 133 wind turbines located in
a project area of 32,400 acres near Brownsville, in Dodge and Fond
du Lac Counties. Horicon National Wildlife Refuge is located approximately
1.2 miles west of the project area boundary, and the entire system
- both the refuge and the adjacent state-managed Horicon Marsh State
Wildlife Area - has been designated as a Ramsar Wetland of International
Importance and deserves special conservation attention.
While
the initial proposal by Forward Energy called for the location of
wind-power units to be approximately 4 miles from the refuge, the
plan then doubled the number of proposed turbines and would locate
them closer - within 1.2 miles. Such a shift could potentially increase
wildlife impacts.
In
a 1999 study done for the Wisconsin DNR, it was stated that bird
activity is much reduced at distances of 8 kilometers (approximately
5 miles) of the edge of Horicon Marsh, and that the placement of
"generators at distances 8km or greater will have significantly
lower impacts than generators closer to the marsh." Unfortunately,
the most current proposed turbine placement by Forward runs counter
to this recommendation.
While
the total elimination of avian mortality is impossible even under
the best of circumstances, concern for some species is particularly
troubling. For example, Sandhill Cranes at Horicon not only use
the marsh itself, but also surrounding farmland for feeding and
assembling. Concern for this operating buffer is vital since hundreds
of Sandhill Cranes use some of the same fields in the fall where
turbines are now planned. It is unknown how the cranes will adjust,
if at all.
At
the end of April, a three-mile-radius turbine ban was barely approved
by the Dodge County Planning, Development, and Parks Committee,
but the state Public Service Commission could override the county
committee's decision.
The
Horicon scene may prove to be an important case in determining future
guidelines for the siting of wind farms - and what should be clearly
avoided - in the area of wind-power proximity to refuges. The whole
issue merits continued and watchful scrutiny.
For
more information click
here.
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FUTURE OF STATESIDE LWCF SERIOUSLY THREATENED
Five
years ago this month, the U.S. House of Representatives passed the
Conservation and Reinvestment Act (CARA) by a stunning two-thirds
majority. This bill would have used offshore oil and gas revenue
(royalties going into the U.S. Treasury) to guarantee $3 billion
annually for wildlife and wild places. Central to this bill were
a state wildlife funding title at $350 million yearly, and full
funding annually for the Land and Water Conservation Fund (LWCF)
to the tune of $450 million for federal lands and $450 million for
stateside lands. The bill was challenged by congressional appropriators
who didn't wish to guarantee funding into the future. It was particularly
opposed by property-rights ideologues who saw "black helicopters"
almost everywhere, and was even resisted by some environmentalists
who were loathed to rely upon what was perceived to be tainted money
obtained from offshore oil and gas revenues.
The
CARA bill never reached the floor of the Senate and, unfortunately,
the needs addressed by CARA still go a-begging.
The
Land and Water Conservation Fund (LWCF) continues to move along,
although it is outside CARA and without guaranteed funds. It is
a vehicle that has been responsible for the creation and development
of more than 40,000 national, state, and local parks, refuges, forests,
and recreation areas in all fifty states (and 98% of all U.S. counties).
Many birding hotspots have been preserved or enhanced through this
program.
As
Congress considers the funding options for the year, it looks like
the stateside LWCF will be starved again, and the federal portion
is also under assault.
Just
last month, the National Recreation and Park Association (NRPA)
prepared a fine reminder about the importance of the stateside portion
of the LWCF. In a "White Paper" addressing the LWCF, NRPA stated
that the plan "to terminate the LWCF state assistance program in
the 2006 budget would cause irreparable harm to the ability of states
and local communities to create new parks, develop recreation facilities,
conserve open space, and to provide permanent outdoor recreation
opportunities for the health and enjoyment all Americans on public
lands." Recently, the Administration and Congress have "broadened"
the use of LWCF funds to support a variety of conservation and land-partnership
programs. This action constitutes a foray into these funds which,
in the words of the NRPA "repudiates one of the fundamental purposes
of the LWCF Act."
The
White Paper summarizes the importance of the LWCF and rebuts the
justifications made in the 2006 budget proposed to Congress to permanently
eliminate this invaluable program. The full report can be accessed
here.
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A LOOK AT THE MEXICAN BIRD TRADE
A
Mexican colleague, Manuel Grosselet, recently passed on a report
from a bird-market in Toluca, a municipality west of Mexico City.
Working in cooperation with Wildlife Enforcement in Mexico (PROFEPA),
last month a visit was made to the markets to check on the activities
of the bird sellers.
From
our understanding Mexico permits two kinds of legal bird harvest:
subsistence harvest and harvest through UMA (i.e., Unidad de Manejo
Ambiental). However the illegal harvest sector looks very strong
in Mexico. In the case of bird harvest managed by the UMA, the trader
can ask to collect a certain numbers of birds, supported by a survey
of the local population, with the assumption that this harvesting
is, in theory at least, sustainable. Other kinds of bird harvests
are apparently illegal.
Some
of the trade at Toluca was legal; however, much was illegal and
was shut down. The commonest illegally kept cage birds found were
Painted Buntings. . How many birds (legal or otherwise) died before
the investigation is unknown.
A list
of species found in one Toluca market included: Green Jay, Curve-billed
Thrasher, Northern Mockingbird, Slate-colored and Brown-backed Solitaire,
White-throated and Rufous-backed Robin, Cedar Waxwing, Phainopepla,
Red-legged Honeycreeper, Grasshopper and Chipping Sparrow, Painted,
Indigo, and Orange-breasted Bunting, Northern Cardinal, House Finch,
Blue and Black-headed Grosbeak, Blue Bunting, Lesser Goldfinch,
and Scott's, Black-backed, and Altamira Orioles.
Bird
traders are normally poor people. The government will give permitted
individuals a variable quota of birds to catch - around 250 per
person. Given the cheap market price for the birds (between 20 cents
and $1.50 per bird), the bird trappers need to capture far more
than 250 birds to earn something reasonable.
After
talking with local bird trappers in different places of Mexico,
it was calculated that they caught approximately 2,000 birds per
season per trapper. The wildlife authorities in Mexico City have
around 1,000 trappers registered, but it is estimated by researchers
that the true number is more around 15,000 to 18,000 in Mexico.
Even with 10,000 trappers capturing only a thousand birds each,
the number of birds removed from the wild yearly is easily 10 million
birds.
Gives
one pause, doesn't it?
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ARANSAS NWR CRANES NOW HEADED NORTHWARD
Regular
readers of this E-bulletin will remember that in November we reported
on the expected arrival of record numbers of Whooping Cranes to
the Aransas National Wildlife Refuge and vicinity on the coast of
Texas. Remember also that in December we reported the tragic shooting
of two Whoopers in Kansas.
As
predicted, Whooping Cranes wintering in and around Aransas NWR topped
over 200 birds this past season, the highest number, presumably,
in the last 100 years. The 2004-05 winter season was splendid for
the Whooping Crane population, stretching out over 35 miles along
the Texas coast. Although one youngster and one adult crane, from
the population of 217, died while at Aransas NWR, that still left
215 individuals by spring, an encouraging increase of 22 birds from
the 193 at Aransas and vicinity the previous spring.
Aerial
surveys have confirmed that all the Whooping Cranes, except for
one injured bird, have left Aransas for the season as of this writing.
In fact, numerous Whooping Cranes had been confirmed by the end
of April on the northern edge of the agricultural country in Saskatchewan,
and some presumably have already completed the migration to Wood
Buffalo National Park, a two-day flight farther north across forest
lands.
If
you want to review the excellent survey results for the past season
at Aransas NWR, check this
informative site.
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UPS
AND DOWNS AMONG ARIZONA CONDORS
While
Whooping Cranes have been doing well, it's been a very tough year
so far for the experimental Arizona cluster of California Condors
in and around the Grand Canyon.
For
example, in January young condor #342 needed to be captured and
then operated on for what turned out to be a blockage in its gizzard.
That operation turned out well, but it had field biologists worried.
Then there was the unfortunate loss of two sub-adult birds: condor
#235 died in mid-January, and condor #249 about two weeks later.
Each condor died of lead poisoning, both showing extremely high
lead-levels in tissue, as well as having pellets of lead shot in
their digestive tracts. (Lead poisoning has been a recurring problem
for condors, since condors regularly ingest carrion with imbedded
lead shot.) In early February, male condor #246, was captured because
he was exhibiting odd behavior. The bird was found to have an unidentified
mass near his breast, a result of an infection, probably due to
a puncture wound. Fortunately he was released two days later.
Although
the loss of condors #235 and #249 was discouraging, the rest of
the population continued to provide field biologists with hope at
least through February, when three new members were introduced into
the population: #297, #302, and #314.
In
late March, however, field biologists located the dead body of the
first California Condor chick hatched in the wild in Arizona in
more than 80 years, #305. On 26 March, the bird's body was found
inside Grand Canyon National Park. The bird, just under two years
old, had hatched in May 2003 in a nest cave near the South Rim the
park. The bird had been doing well since it began flying on 5 November
2003.
There
is a silver lining, however. Two other chicks that fledged in the
wild last year seem to be coping with their environment. Moreover,
numerous courtship activities have been observed and at least two
pairs of breeding-age birds have been exhibiting signs of nesting
behavior. It is hoped that multiple pairs will produce wild chicks
in 2005.
The
historic Arizona reintroduction is a joint project among The Peregrine
Fund, the Arizona Game and Fish Department, the U.S. Fish and Wildlife
Service, the Bureau of Land Management, the National Park Service,
Southern Utah's Coalition of Resources and Economics, and other
partners.
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NEW
PACIFIC REGION SEABIRD CONSERVATION PLAN
In
case you missed it, the USFWS has recently published its Seabird
Conservation Plan for the Pacific Region. The 262-page Plan includes
a thorough review of habitat, threats, and management issues. It
documents population status of 60 species of seabirds breeding in
the Pacific Region. The Plan lists conservation concerns for each
species along with recommended actions, and it is available on line
here.
Just click on the "Seabird Conservation Plan."
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ARCTIC
REFUGE DRILLING CREEPS CLOSER
In
late April, Congress voted to approve a nearly $2.6 trillion federal
budget that opens the way for oil and gas drilling in the Arctic
National Wildlife Refuge. The measure passed the House by a vote
of 214 - 211 and the Senate by a vote of 52 - 47.
Although
the budget resolution conference report does not explicitly mention
the Arctic National Wildlife Refuge, it would allow drilling in
the refuge through the subsequent budget reconciliation process,
which is protected from a Senate filibuster.
There
are still multiple steps that could stop the drilling, however,
the next of which will probably come in a couple months when the
Senate energy committee and House resources panel must provide the
budget with reconciliation language.
In
the meantime, the coastal plain of the Arctic NWR will soon burst
into springtime glory, what with migrating birds returning and nesting,
and the spectacular flowering of tundra wildflowers. Shorebirds,
terns, jaegers, and waterfowl aplenty will be especially noticeable.
To review what colleagues at the Manomet Center for Conservation
Sciences are doing in that region, especially with shorebirds, click
here.
Manomet
is also working on producing a book called "Arctic Wings" a publication
which will highlight the wonderful birds of this spectacular refuge
and the connections they maintain with the rest of the hemisphere.
Stay tuned for more details.
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NEW
WHSRN SITE IN BRITISH COLUMBIA
On
29 April, British Columbia's Fraser River Estuary celebrated a highly
successful dedication ceremony in honor of being recognized as a
Western Hemisphere Shorebird Reserve Network (WHSRN) Site of Hemispheric
Importance. Among the many attendees at this event were area mayors
and local city council members.
The
Fraser River Delta is known as a major stopover site for Western
Sandpipers and an important wintering site for Dunlin. In 2004,
the site hosted some 600,000 Western Sandpipers and 30,000 Dunlin.
Counts in previous years have been even higher. The Ministry of
Water, Land and Air Protection of British Columbia, and Environment
Canada are the entities responsible for the nomination of this 31,000-hectare
site. Each organization, along with the local city government (i.e.,
the Corporation of Delta), expressed its support for the declaration
of the area as a WHSRN site, along with making a commitment to future
shorebird conservation at the area. The Fraser River has previously
been recognized as a Ramsar Wetland of International Significance.
WHSRN
designation carries no legal weight, but it draws attention to the
need to conserve important shorebird sites. There are now over 60
WHSRN sites recognized between Alaska and the top of South America,
including, now, six in Canada. For more information: visit http://www.birdsonthebay.ca/hrd.html
and http://www.manomet.org/WHSRN/viewsite.php?id=79.
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RED KNOT NUMBERS
Also
from WHSRN comes news that wintering numbers of Red Knots in Tierra
del Fuego this year were down 43% in comparison with 2004. Fewer
than 18,000 individuals were seen during aerial. Subsequent ground
counts by the International Red Knot Team verified the aerial estimates
and determined that there appeared to be no no new or significant
threats in these non-breeding areas, which supported over 50,000
Red Knots just five years ago. (Similar declines have not been seen
in Hudsonian Godwits that share these seasonal habitats, suggesting
that the problem most likely lies elsewhere.) Many observers believe
the impact of over-harvesting of horseshoe crabs at Delaware Bay
is to blame.
Later
this month, Red Knots will be stopping at Delaware Bay and elsewhere
along the Mid-Atlantic Coast to harvest horseshoe crab eggs while
on their way north to their arctic breeding grounds. This year,
however, the State of New Jersey's Division of Fish and Wildlife
intends to substantially increase the availability of eggs by improving
the protection of key feeding sites and to control the influence
of gulls who compete with shorebirds for eggs. This is because state
wildlife authorities have also noticed a recent drop (over 85 percent)
in the numbers of Red Knots, compared to numbers in the recent past.
Some experts say if the decrease noted in the Red Knot population
continues on its current course, at least the North American population
could be approaching elimination. "The trajectory of the population
might be unstoppable at this point," warned Larry Niles, head of
New Jersey's Department of Environmental Protection's Nongame Species
Program.
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BIRD-FEEDING
INDUSTRY FORMS FOUNDATION
The
Wild Bird Feeding Industry (WBFI) has established the WBFI Research
Foundation for the purpose of studying wild birds and their seed
and feeder preferences.
The
intent is to investigate what is good for birds, harmful to birds,
and what we can do about it, while, at the same time, enjoy the
pastime of bird-feeding in the most responsible way. The first research
study into the seed-and-feeder preferences of bird species frequenting
backyard bird feeders is scheduled to run from Fall 2005 through
Fall 2008. For more information, visit the
WBFI website.
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JELLY
DOUBTS?
And
speaking of bird-feeding, there have been warnings in the past about
increasing the sugar content at hummingbird feeders. (A four-to-one,
water-to-sugar, mixture is usually recommended.) Similar concern
over fruit-jelly may also be justified.
Kent
Mahaffey, manager of the San Diego Wild Animal Park's famous Bird
Show, has more than two decade's experience working with captive
birds. When asked about offering jellies to wild birds, such as
orioles, he said, "In general, any food that exceeds the balance
of sucrose in a bird's natural diet is suspect." Natural nectars
contain 12% to 30% sugars, while jams and jellies are more than
half sugar.
Unfortunately,
a bird that develops a strong liking for jam or jelly may focus
on those foods and may give up searching for needed protein-rich
insects. This behavior can be especially damaging to fledglings
or young birds that still need protein for development.
Our
colleague, Kay Charter from Michigan, adds that there may be other
negative effects, including the fact that sodium benzoate and other
preservatives found in commercial jams are potentially harmful to
birds; higher than normal sugar loads may outstrip a bird's ability
to adequately process the sugar (as it does in humans); and products
high in sugars are an ideal environment for bacterial growth.
She
adds that we must not assume that because orioles love jelly, that
jelly is therefore good for them - or even that it does no harm.
There is a healthy substitute for jams and jellie: grapes. Grapes
are natural to oriole diets. An additional benefit is that other
birds, such as catbirds, chickadees, and woodpeckers - especially
sapsuckers - also enjoy them.
Kent
Mahaffey summarized this situation by stating, "Birds developed
the way they did by adapting to the environments in which they lived
and the foods that sustained them. We do our best for them when
we stick as closely as possible to their natural diets."
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FRANK
BELLROSE (1916-2005)
Finally,
Frank Bellrose, waterfowl researcher, conservationist, and author
died in late February, but we neglected to make note of it in our
E-bulletin. Bellrose was an expert in waterfowl biology, a man who
held a lifelong interest in these birds and in wetlands. He was
instrumental in developing the first predator-proof Wood Duck nest
boxes; he also pioneered research in lead poisoning mortality in
waterfowl, research that was a major factor in the gradual replacement
of lead with non-toxic shot for waterfowling in the U.S. and elsewhere.
He published more than 110 scientific papers and popular articles,
but he is perhaps best known for his 1976 classic DUCKS, GEESE AND
SWANS OF NORTH AMERICA. Bellrose's book sold more than 350,000 copies
and remains among the most popular books on waterfowl ever written.
We
welcome your distribution of all or parts of this E-bulletin, only
requesting mention of the material's origins.
This
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of North America (SONA) and the National Wildlife Refuge Association
(NWRA). You can access an archive
of past E-bulletins on the NWRA site. You can also get other
excellent bird-oriented "All about birds" information through an
Internet project between Swarovski and the Cornell Lab of Ornithology
here: http://www.allaboutbirds.org/
If
you have a friend or co-worker who wants to get future copies of
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Wayne Petersen 781/293-9730, wayne.petersen@swarovskibirding.com
OR Paul Baicich 410/992-9736, paul.baicich@swarovskibirding.com
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