(Williamsburg, VA)—The Center for Conservation Biology at the College of William and Mary and Virginia Commonwealth University has compiled 2011 survey results for the Virginia bald eagle population. The 2011 survey checked more than 1,000 nests and monitored 726 occupied territories. This number represents an 6.2% increase over 2010. More than 130 new nests were mapped. Eagle territories were located within 45 counties and 10 independent cities. A total of 938 chicks were counted during the productivity flight. This is the highest chick production recorded throughout the long history of the survey. The Virginia population continues to have tremendous reproductive momentum. Of 11,030 chicks documented in the past 35 years, 8.5% were produced in 2011 and 73.2% were produced since 2000. In general, this momentum is the combined result of an overall increase in the breeding population, the breeding success rate and the average brood size. A full survey report is available online.
We very much appreciate the financial contributions of the U.S. Fish and Wildlife Service, the U.S. Army Corps of Engineers and the Virginia Society of Ornithology in keeping the survey running. Survey information is used by an entire community of government agencies, NGOs, environmental consulting firms, and landowners.
For the third year, the locations of known nests from the Virginia Survey are being made available online to the public. The Center has developed a VAEagles website (http://www.ccb-wm.org/virginiaeagles/index.htm) that hosts a Google Maps application allowing users to locate documented eagle nests and to view their mapped locations on a county by county basis. The information is being made available in the hope that the public will become more actively involved in the conservation of this species throughout Virginia. Despite our best efforts, an unknown number of eagle nests go unrecorded each year. This is particularly true in the Piedmont and mountains. We believe that the public knows of many nests that are unknown to us. We are requesting that the public view nests in their locality and report nests that are currently not included in the annual survey.
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FROM: Center for Conservation Biology, College of William and Mary and Virginia Commonwealth University
FOR IMMEDIATE RELEASE: 5 September, 2011
MEDIA CONTACTS:
Dr. Bryan D. Watts, Director
Center for Conservation Biology
College of William and Mary
Virginia Commonwealth University
bdwatt@wm.edu
(757) 221-2247
An adult female osprey on a nest in the York River. The resident pair in this territory arrived in early March and remained on the territory throughout the nesting season. Despite being resident, she never was documented to lay a clutch. The most likely explanation for large numbers of pairs not laying clutches in 2024 is that females did not reach the nutritional condition required to produce eggs. Photo by Bryan Watts.
Osprey with menhaden. Due to its high energy density, menhaden is a critical prey item for osprey populations along the Atlantic Coast and within the Chesapeake Bay. Reductions in the availability of menhaden result in a decline in the prominence of menhaden in the diet and related diet quality. Prominence of menhaden in the diet is generally believed to be linked to productivity and population stability. Photo by Bryan Watts.