|
THE BIRDING COMMUNITY E-BULLETIN January 2008
This Birding Community E-bulletin is being distributed through the
generous support of Steiner Binoculars as a service to active and
concerned birders, those dedicated to the joys of birding and the
protection of birds and their habitats. You can access an archive of
our past E-bulletins on the website of the National Wildlife Refuge
Association (NWRA): http://www.refugenet.org/birding/birding5.html and
on the birding pages for Steiner Binoculars http://www.steiner-birding.com/bulletin.html
RARITY FOCUS
Several Mexican rarities found in the Lower Rio Grande Valley of Texas attracted attention in December. Among them were a Blue Bunting and a Crimson-collared Grosbeak, both females and both found at the Frontera Audubon thicket in Weslaco. These vagrants were present for most of the month starting from 9 December and 14 December, respectively.
Our rarity of the month choice, however, is a different species discovered in South Texas.
Christmas Bird Counts (CBCs) often unearth local rarities, sometimes at locations not regularly covered on routine birding routes. The La Sal Vieja CBC in the Lower Rio Grande Valley of Texas provided just such a surprise species. This count is held in the Valley Salt Lake area around the Lower Rio Grande National Wildlife Refuge. Much of the count area is made up of a combination of Federal and private lands consisting of grassland, salt lakes, and arid brush country comprised of sandy soils and extensive ranch land.
On 14 December, during the La Sal Vieja CBC five Masked Ducks were discovered on ponds located on private property near the East Lake unit of the Lower Rio Grande NWR, but visible from an adjacent public road.
Masked Ducks are small tropical, stiff-tailed ducks that are closely related to Ruddy Ducks. They are something of an enigma in the U.S., appearing and even breeding irregularly in Texas and very rarely appearing elsewhere in the U.S. Somewhat shy and difficult to see, Masked Ducks often remain hidden in dense aquatic vegetation during the daytime. Masked Ducks appearing in Texas probably originate in Mexico, and they are most likely to be found during especially wet years. What amounts to small invasions have occurred in the 1930s, the late 1960s, the early 1970s, and the 1990s.
After the 14 December CBC, birders found different numbers of the secretive Masked Ducks through the rest of the month: for example, four on 20 and 21 December, six on 22 December, two on 24 December, four on 29 December, and three on 31 December.
For photos by Dan Jones see here (and search for the post for 21 December):
http://antshrike.blogspot.com/2008_12_01_archive.html
GRAND CANYON CALIFORNIA CONDOR CHICKS FLEDGE
Two California Condor chicks that hatched in May fledged from their nests in the Grand Canyon in December. This brings the world's population of California Condors now flying free in the wild to 169. This includes 67 in Arizona, 83 in California, and 19 in Mexico.
This is a significant milestone since it is the first year in the condor recovery program where there are more condors flying free than there are in captivity. The goal for the condor recovery plan is to produce at least 150 members in each of the U.S. populations, including at least 15 breeding pairs
December's fledglings also make a total of nine wild chicks hatched in the Grand Canyon since 1996. Eight of these birds are still alive, and all of these birds are part of an "experimental population" under the Endangered Species Act - section 10(j).
The most serious challenge continuing to face all free-flying California Condors is lead poisoning from the remains of unretrieved animals shot with lead ammunition. On-site researchers in the vicinity of the Grand Canyon, the Arizona Game and Fish Department, and local hunting groups have cooperated on a campaign that has produced an increase in the number of hunters who have voluntarily switched to copper bullets or other non-lead alternatives when hunting in condor country. This campaign has resulted in a corresponding drop in condor deaths ascribed to lead poisoning.
"We are grateful to all the hunters who are valued partners in restoring California Condors to their historic range," Bill Heinrich of The Peregrine Fund said. But he warned that "until we significantly reduce the amount of lead they are exposed to, we will never have a self-sustaining population of condors."
We recently reported on related condor developments in California in the June, August, and September 2008 E-bulletins:
http://www.refugenet.org/birding/junSBC08.html#TOC04
http://www.refugenet.org/birding/augSBC08.html#TOC06
http://www.refugenet.org/birding/sepSBC08.html#TOC03
BOOK REVIEW: RARE BIRDS OF CALIFORNIA
Finally, while on the theme of rarities, it is appropriate to mention
the recent publication of RARE BIRDS OF CALIFORNIA (2007, Western
Field Ornithologists). This large book of almost 600 pages is stunning
in its thoroughness. The editors (Robert Hamilton, Michael Patten, and
Richard Erickson) have done a remarkable job of summarizing the
documentation for all the rare bird records in California through the
end of 2003.The volume is an historical outline of the work of the
California Bird Records Committee, beginning with its genesis in 1970.
California was the first state in the Americas to establish a
committee for the purpose of vetting records of rare and vagrant
birds.
The treatment of each species in the book is preceded by a fine essay
on trends of that species in California, along with including a more
general overview of developments in California birding from 1960-2007,
as well as the process of documenting and reporting records. The
species treatments that constitute the very heart of the book are
amazingly thorough, with maps and sketches often supplementing
photographs and the core summaries of sightings.
The sheer thoroughness of the volume, however, begs the question: What
is the shelf life of such a book? With every new record that is
accumulated, the book will gradually show its age. While this digest
of "old" records will remain invaluable, every new record
established will inevitably date the volume. (As evidence, witness
Appendix H, that serves to supplement the species treatments of
reports collected between 2004 and 2007.)
If this elegant volume serves as a standard for other state and
provincial bird record committees, it also provides an example of why
similar future efforts should seriously consider Web publication as an
alternative for such information, the obvious advantages being the
ability to provide rolling annual updates, a searchable database,
broader access, and simple economy as hardcopy publications continue
to increase in price.
REPAIR ACT ON NWR INVASIVES STALLED IN SENATE?
On 22 October, the House of Representatives passed H.R. 767, the
Refuge Ecology Protection, Assistance, and Immediate Response (REPAIR)
Act. This piece of legislation addresses the important and often
expensive issue of confronting invasive (non-native) species on
National Wildlife Refuges (NWRs). The bill then moved to the Senate
for action.
The REPAIR Act, championed by Congressman Ron Kind (D-WI), co-chair of
the House Wildlife Refuge Caucus, stated that "[R]efuges have
faced an unanswered march of invasive plants and animals that have
literally taken over, crowding out the very wildlife and habitat the
refuges are charged with protecting."
According to the U.S. Fish and Wildlife Service, two million acres of
refuge lands are infested with invasive plants, and 4,471 invasive
animal populations have been recorded on refuge property. The Service
also estimates that over $300 million of invasive species projects
exist on wildlife refuges today, possibly the fastest growing portion
of the Refuge System's current budget.
By providing funding through two different grants, the REPAIR Act
could potentially help prevent new invasive species from taking hold
and disrupting refuge ecosystems.
If this bill was passed in the House in late October, why raise
attention to it now?
The answer is because it hasn't moved in the Senate. In fact, some
animal rights advocates, focusing on defending feral cats from
potential extermination on and near NWRs, are taking credit for
stalling Senate movement.
For more on the passage of the H.R. 767, see the statement by the
American Bird Conservancy: http://www.abcbirds.org/newsandreports/releases/071023.html
For more background on some of the problems caused by invasive species
on NWRs, see the website of the National Wildlife Refuge Association
(NWRA) : http://www.refugenet.org/New-issues/invasives.html
CONGRESSIONAL MOVES ON FARM BILL, REFUGE BUDGET, AND
CLIMATE
There was still some positive news pertaining to birds and bird
habitat in December, both in the Senate, and from Congress as a whole.
Summarized below are a few important bird-friendly developments.
First, on the Farm Bill, we saw the Senate pass a 2007 Farm Bill
mid-month, catching up to - and sometimes bettering - the House
version already passed. Standard and highly beneficial programs for
grasslands (Conservation Reserve Program and Grassland Reserve
Program) and wetlands (Wetland Reserve Program) were reauthorized. Two
new programs were also proposed (now in both Senate and House
version): a "Sodsaver" provision that would protect the last
standing native prairie remaining in the U.S. (the stronger Senate
version removes landowner eligibility for federal disaster payments
for an indefinite period), and "Open Fields" which would
back existing state programs to reward farmers and ranchers who open
their land to outdoor-related access. This last move would expand
successful walk-in hunting and fishing programs in a number of states.
A conference committee is expected to begin reconciling the Senate and
House versions of the Farm Bill early this year.
Second, right before the Christmas Congressional recess, the Senate
joined with the House in passing an omnibus-spending package for FY08.
Among a number of funding issues worthy of mention to bird supporters
was a Refuge System Operations and Maintenance budget that
dramatically reversed the recent downward trend. (Over the past four
years, NWRs have had flat or declining budgets, floating below $400
million per year, and forcing each FWS Region to implement downsizing
plans calling for a 20 percent reduction of the workforce, along with
similar cuts for habitat management.) The Refuge System budget would
rise accordingly to $434 million for FY08, a major increase of $39
million over last year. Although not as high as the recommended $451
million suggested by the House, this is still a dramatic and
much-needed funding boost. (Readers should know that merely to stand
still, NWRs need an additional $15 million annually, and that to meet
fundamental wildlife conservation and public-use mandates, the NWRs
would require at least $765 million annually.)
Third, in early December the Senate Environment and Public Works
Committee approved the Lieberman-Warner Climate Security Act (S. 2191)
by a vote of 11-8. Eighteen percent of revenues from the carbon permit
auction established under this bill, perhaps as much as $9.3 billion
per year in the beginning, would be dedicated to natural resources
adaptation. Some 35 percent of those revenues would go to state fish
and wildlife agencies, channeled through the Wildlife Conservation and
Restoration Program, for activities aimed at assisting fish and
wildlife adaptation and habitat resiliency in response to climate
change. (Other funds would be available go toward supporting
additional programs, including cost-share landowner and international
wildlife efforts.)
The implications of this approach were covered in last month's
E-bulletin: http://www.refugenet.org/birding/decSBC07.html#TOC05
and http://www.steiner-birding.com/bulletin/dec07.html
Some observers assert that the Lieberman-Warner bill does not reach
far enough in setting limits for greenhouse gasses. Nonetheless, the
bill has been improved with every bill version and may continue to do
so as the Senate discusses it and as outside pressure continues. The
good news is that the Lieberman-Warner Bill has this unprecedented
wildlife component, and that S. 2191 will surely be the legislation
that is adjusted and amended as Congressional discussion continues.
In sum, 2008 may prove to be interesting, if not helpful, for birds
and other wildlife.
CHARLOTTE: BARRED OWLS ADAPTING TO CITY AND SUBURBAN
LIFE?
Urban and near-urban wildlife numbers have been increasing in recent
decades, notably with populations of Gray Squirrels, Canada Geese,
Raccoons, and White-tailed Deer. However, the appearance of
significant urban and suburban populations of Barred Owls has been a
surprise to many. Charlotte, North Carolina, for example, has become
home to a prospering population of these owls.
The Barred Owl population in Charlotte is so robust that the city was
chosen to be the site for the most extensive Barred Owl research study
ever attempted, with fieldwork actually taking place in the manicured
front lawns and garden-filled back yards of urban and suburban
neighborhoods.
The research study, an effort sponsored by the Carolina Raptor Center,
began in 2001. The study has been large in scale, with researchers
monitoring about 40 nesting sites each year, and annually
radio-tracking many sets of Barred Owl young as they mature.
Traditionally, Barred Owls were thought to need large stands of
old-growth or bottomland forests to survive. But University of North
Carolina at Charlotte ecologist and ornithologist, Rob Bierregaard,
who has directed the six-year-old research study, says "Either
the Barred Owls in Charlotte haven't read that book or the book is
wrong, because they are really here and apparently doing quite
well." Bierregaard explains that the owls need an open understory
for optimal hunting, not a forest with thick undergrowth. "When
you look at suburban Charlotte, what do we have? We've got giant
old Willow Oak trees with plenty of holes in them and we've got
mowed lawns and azalea bushes, which is a very open understory, so
they [the owls] can see a long way." In addition to the open
understory there are plenty of birdfeeders to attract additional prey.
(Cooper's Hawks are also attracted to the birdfeeders, but the
hawks in the Charlotte may not as successful when it comes to
nesting.)
For more information: http://www.sciencedaily.com/releases/2007/10/071016131337.htm
LOOKING UPSLOPE AT THE THREAT OF BIRD EXTINCTIONS
As certain bird habitats shift to higher elevations driven by rising
temperatures, birds depending on highland habitats and their
associated vegetation are being seriously squeezed, possibly squeezed
out of existence. Once a species retreats upslope far enough, as areas
of once suitable habitat at lower elevations become too warm for the
species, the habitable area for the bird could eventually be reduced
to zero.
A Stanford University study on this subject has also asserted that
many resident birds may be much more threatened from climate change
than migratory birds (i.e., many sedentary mountain birds currently
thought to be relatively safe may actually be at great risk).
For a summary of this unsettling report, see: http://news-service.stanford.edu/news/2008/january9/caganone-010908.html
MORE LESSER PRAIRIE-CHICKEN HABITAT SECURED
Regular readers of the E-bulletin know that the Lesser Prairie-Chicken
- a non-migratory resident prairie grouse - is in serious trouble.
Concern for this species has been the subject of previous E-bulletin
reports. For example:
http://www.refugenet.org/birding/decSBC06.html#TOC06
and http://www.steiner-birding.com/bulletin/dec06.html
or
http://www.refugenet.org/birding/janSBC07.html#TOC04
and http://www.steiner-birding.com/bulletin/jan07.html
Lesser Prairie-Chicken has also been a candidate for protection under
the Endangered Species Act, largely because it has experienced a
decrease in its population perhaps by more than 90 percent since the
late 1800s. Reasons for this decline are primarily due to the
conversion of its former grassland and rangeland habitat to cropland,
unwise grazing-management practices, oil and gas development, and
overall habitat fragmentation. Currently an estimated 32,000 Lesser
Prairie-Chickens may still remain in the southern Great Plains, in
Texas, New Mexico, Oklahoma, Kansas, and Colorado. Some estimates
place the population as low as 10,000 birds.
For a summary of the species natural history, a range map, and ongoing
conservation concerns, see the North American Grouse Partnership
website: http://www.grousepartners.org/birds.htm#lpc
Also see the article on fences and prairie-chicken losses: http://www.grousepartners.org/images2/grousenews/2006/DontFenceThemIn.pdf
In mid-November 2007, the Nature Conservancy in Texas announced that
it had purchased the 6,000-acre Fitzgerald Ranch in the High Plains of
West Texas, specifically to protect habitat for Lesser
Prairie-Chickens and other wildlife. Located about 40 miles southwest
of Lubbock in Yoakum and Terry counties, the property represents the
first land that TNC has purchased in this area of Texas.
See the summary from the Playa Lakes Joint Venture: http://www.pljv.org/cms/latest-news#Story2
And also from Texas TNC: http://www.nature.org/wherewework/northamerica/states/texas/press/press3211.html
While protecting the Fitzgerald Ranch is a very good move, the
ultimate future of this species depends on cooperative management with
operating ranchers willing to restore, enhance, and maintain large
blocks of suitable Lesser Prairie-Chicken habitat. This would mean
continued encouragement from state and federal agencies, a model that
is actually starting to be created.
DELAWARE: LATEST ADDITION TO BIRDING TRAILS
Birding trails, a concept pioneered in the early 1990s in Texas,
continue to spread. The latest addition is the Delaware Birding Trail,
in a state nicknamed "The Small Wonder." The latest trail
certainly matches the state's nickname.
With an inaugural ceremony at Bombay Hook NWR on 8 December, following
a week of cumulative bird-finding at sites along the trail, the new
trail was launched. Its development, accompanied by an excellent
website, was made possible by a creative group of state, federal, and
local partners: http://www.delawarebirdingtrail.org/
RICE AGRICULTURE AND BIRDS IN SOUTHERN SOUTH AMERICA
As regular readers of this E-bulletin know, when the rice production
is properly managed it can potentially provide benefits for ducks,
long-legged waders, shorebirds, and a number of other wetland birds.
The significance of rice management to bird conservation was reflected
by a workshop held this past fall in Buenos Aires, Argentina. Wetlands
International organized the workshop that was titled "Shorebird
Conservation and Rice Cultivation in Southern South America."
Attending the meeting were about 40 conservation, bird, and rice
experts from Argentina, Bolivia, Brazil, Paraguay, Peru, Uruguay, and
the U.S.
The intent of the workshop was to exchange information, promote
international cooperation, and identify the myriad challenges involved
with the promotion of "best practices" for rice cultivation.
For summary details of this important meeting, see:
http://www.whsrn.org/news/whsrnews.html#rice
TRACKING THE NORTHERN IRRUPTION
In October we drew attention to "winter finch" predictions
rising from Ron Pittaway's report for Ontario:
http://www.refugenet.org/birding/octSBC07.html#TOC05
and
http://www.steiner-birding.com/bulletin/oct07.html
Christmas Bird Count participants and feeder-watchers in many areas
have already reported the presence of large numbers of these irruptive
species - including non-finch species such as Red-breasted Nuthatch
and Bohemian Waxwing.. A good way to track these unfolding irruptions
is through the Cornell Lab's eBird. To see a helpful summary
report linked to eBird by Matt Medler from the Boreal Songbird
Initiative, readers are referred to: http://ebird.org/content/ebird/news/Irruption2007Nov.html
TIP OF THE MONTH: FEEDER FRENZY
Considering our reports on the Colorado Streak-backed Oriole, the
possible feeder-relationship between Barred Owls and feeders in North
Carolina, and the winter-finch watch across the northern parts of
North America, this is a good time to remind readers to re-supply your
feeders at home, heap them with new and enticing delicacies, and wait
for the resulting parade of hungry visitors to appear.
Indeed, the Christmas Bird Count season - just ending now - always
highlights special feeder visitors from coast to coast, and next month
many of our readers will be participating in the Great Backyard Bird
Count: http://www.birdsource.org/gbbc/
PIGEON POOP? PIGEON CZAR!
Finally, for this month, we have a report from New York City. Simcha
Felder, a member of the City Council, claims that each of the
city's pigeons can live for 15 years and can produces an estimated
25 pounds of droppings a year. (European settlers brought Rock Pigeons
to North America as domesticated birds; the birds that hold sway in
New York City are their semi-wild descendants.) In mid-November Felder
released a report proposing legislation that would curb the city's
pigeon population. The Councilman advocates a birth control strategy
through OvoControl P, a system that recently received approval from
the Environmental Protection Agency and that has been used in several
cities to control pigeon population.
But his top recommendation is directed at humans. He has proposed
legislation that would ban the feeding of pigeons on city streets. The
law proposes a $1,000 fine for feeding the urban birds. Says Felder,
"If people like pigeons, let them take them into their homes and
let them crap all over the place in their living rooms."
Another proposal is to create a city "Pigeon Czar" who would
consolidate oversight responsibility. Right now, this responsibility
is spread over several different state and city agencies overseeing
public health, transportation, and the environment. Despite their
reputation as disease carriers, the NYC Health Department does not
consider pigeons a major danger and says that the average New Yorker
is not at risk of catching any disease from the birds or their
droppings.
Of 54 European cities recently surveyed, 29 have pigeon feeding bans.
But these are bans that are hard to enforce given public resistance.
Likewise, in Chicago there is an ordinance banning people from
providing food that would attract rats and other pests, which
presumably includes pigeons. Violators of these ordinances can be
ticketed and fined up to $1,000, or jailed for up to six months, or
both. Currently, few tickets are issued.
Back in The Big Apple, an attempt to use Harris's Hawks against
pigeons in 2003 at Manhattan's Bryant Park was discontinued after
one of the hawks attacked a pet Chihuahua. (According to the
experiment's lead falconer, the hawk probably mistook the little
dog for a rat in the park shrubbery.)
Hearings on Councilman Felder's proposals may be held later this
year.
You can access an archive of past E-bulletins on the National Wildlife
Refuge Association (NWRA) website: http://www.refugenet.org/birding/birding5.html and
on the birding pages for Steiner Binoculars http://www.steiner-birding.com/bulletin.html
If you wish to distribute all or parts of any of the monthly Birding
Community E-bulletins, we simply request that you mention the source
of any material used. (Include a URL for the E-bulletin archives, if
possible.)
If you have any friends or co-workers who want to get onto the monthly
E-bulletin mailing list, have them contact either:
Wayne R. Petersen, Director Massachusetts Important Bird Areas (IBA)
Program Mass Audubon 718/259-2178 wpetersen@massaudubon.org
OR
Paul J. Baicich 410/992-9736 paul.baicich@verizon.net
We never lend or sell our E-bulletin recipient list.
Return to Bulletin page
|