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Peregrine Falcons in 2000

Early Nesting Peregrines Thrive

by
Chris Martin
 

Adult Female Peregrine 
near her Cathedral Ledge nest.
Adult Female Peregrine
near her Cathedral Ledge nest.
Photo by Chris Martin
During the 2000 breeding season, their first after removal from the federal endangered species list, New Hampshire's Peregrine Falcon population began by nesting at a record early date and finished with record-high productivity. Eleven territories were occupied in the Granite State this year, including one in the City of Manchester, where, for at least three weeks in April, an unmated one-year-old female raised in New York City took up residence at a nesting box located on the New Hampshire Tower building. Elsewhere in the state, territorial falcon pairs produced a total of 25 chicks, equaling a state record set in 1999. Not only did every one of ten known pairs lay eggs and hatch chicks, but all ten managed to raise at least one offspring to fledging. Audubon biologists, who track breeding peregrines in a cooperative effort with state and federal agencies, have only documented 100% success in the state once before in the past two decades-back in 1981, when New Hampshire had only a single known territorial pair!

A record early start

What made the 2000 season's flawless productivity record even more amazing was what various pairs had to overcome in order to succeed. Perhaps lured by an extraordinarily mild March, most pairs nested at Extremely early dates, leaving them at high risk of failure in spring storms. In fact, two pairs (Painted Walls in Albany, Rattlesnake Mountain in Rumney) bested by nearly a week the state's previous record early date (March 30) for start of incubation; the Rattle-snake Mountain pair was incubating on March 25, and the Painted Walls pair, located even farther north, was already on their eggs by March 23! Nine out of ten nesting pairs in the state incubated eggs through a week-long period of snow, sleet, and rain with temperatures near 40°F in late April.

Even first-timers succeed

Even inexperienced first-time breeders managed to prosper this year. At Holts Ledge in Lyme, an 11-month-old female, banded as a chick at Devils Slide in Stark in June 1999, replaced the resident adult female in April and paired with the resident six-year-old male. This duo fledged one chick, marking the first documented case in New Hampshire where a one-year-old peregrine successfully produced young. Not far away, at Owls Head in Benton, an unbanded two-year-old female also managed to successfully rear one chick in her first nesting attempt. This was also the first nesting in the post-DDT era at this historic falcon eyrie and former hack site.

Banding results

Audubon Senior Biologist 
Chris Martin carefully holds a three-week old peregrine chick at Dixville Notch.
Audubon Senior Biologist Chris Martin carefully
holds a three-week old peregrine chick at Dixville Notch.
Photo by Chris Martin
Working under a U.S. Fish and Wildlife Service permit, Audubon biologists partnered again with an ever-widening network of rock climbers to access peregrine nest sites and place alphanumeric leg bands on young falcons. We banded 24 of the 25 chicks produced this season, maintaining an outstanding record of banding more than 95% (130 of 135) of all young peregrines produced in the state since 1992. Professional climbing guides at the International Mountaineering Climbing School in North Conway have been especially supportive of these efforts, as have individuals affiliated with the Rumney Climbers Association and Dartmouth College's Outdoor Programs. So far this year, seven New Hampshire-banded falcons have been relocated, including a male hacked in 1987 at Owls Head that has been breeding at New York Hospital in New York City since 1989! Most amazing, however, has been the high survivorship shown by offspring of Devils Slide's resident female, 1/K, previously described in the May/June 2000 issue of New Hampshire Audubon. Over the past six months, three more of 1/K's chicks have been found; to date, seven of her 16 banded fledglings have been relocated! As expected, color-banded birds are making up an increasing percentage of the state's breeding peregrine population, and Audubon hopes to be able to continue to band young and confirm the identity of adults in the years ahead.

Falcon chicks previously banded in N.H. and seen in 2000
Site of originYearSexRecovery locationStatus
Owls Head, NH1987MN.Y. Hosp., NY City, NY breeding since 1989
Devils Slide, NH1996MBarnet Mtn., Barnet, VT3rd year at site
Devils Slide, NH1997MSawyer Mtn., Fairlee, VT3rd year at site
Devils Slide, NH1998FI-91 in Orleans Co., VTfound dead in June
Devils Slide, NH1998MCathedral Ledge, Bartlett, NH1st-time breeder
Devils Slide, NH1999FHolts Ledge, Lyme, NH 1-year old breeder
Devils Slide, NH1999FNew Bedford, MAat Tufts Vet Clinic

Falcon chicks previously banded out of state and seen in 2000
Site of originYearSexRecovery locationStatus
Acadia NP, ME1994FDevils Slide, Stark, NH breeding for 6 years
Fairlee Palisades, VT1994MHolts Ledge, Lyme, NHbreeding for 6 years
Throgs Neck, NY1999FCity of Manchester, NH at nest box April, Oct.

Salute to partners

Rumney Climbers Association
members Bob and Daphne Bruemmer with three Rattlesnake Mountain falcon chicks.
Rumney Climbers Association members
Bob and Daphne Bruemmer with
three Rattlesnake Mountain falcon chicks.
Photo by Chris Martin
This year marks two significant anniversaries in the effort to recover state-listed endangered peregrines in New Hampshire. The Peregrine Fund, working with state and federal agencies, first released falcon chicks in the Granite State 25 years ago, in 1976. The first successful cliff nesting of the recovering population in the state (and in the entire eastern U.S.) took place 20 years ago, in 1981. In light of these milestones, this seems a particularly appropriate time to salute the many natural resource agencies and non-profit groups, as well as the rock climbers, program donors, seasonal staff biologists, and, literally, hundreds of Audubon-trained volunteer observers who have made the difference. Thanks to you all!


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