Bald eagle population booming along historic James River
Virginia bald eagle breeding population continues upward trajectory
September 5, 2011
Bald eagle nests along James River battered by Hurricane Irene
September 7, 2011
(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 breeding population along the James River has increased dramatically (13%) to 174 breeding pairs making this historic drainage the most significant tributary for eagles within the commonwealth. In past years, the James trailed the Rappahannock and Potomac Rivers as the strongholds for the species in the state. Population gains are particularly gratifying since the James is the only major tributary of the Chesapeake Bay where the species completely disappeared as a breeder during the late 1970s. In 2011 pairs along the James produced a record 253 young. As recently as 2000 the river supported only 57 pairs that produced 85 young.
The broader 2011 state-wide survey checked more than 1,000 nests and monitored 726 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.
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 application allowing users to locate documented eagle nests and to view their mapped locations on a county by county basis.
Bald Eagle on nest in Northampton County. Photo by: Bryan Watts.
DOWNLOAD RESOURCES:
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
Related posts
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.
