CASPER, Wyoming — Wildlife officials say bald eagle numbers increased and golden eagle numbers decreased slightly during the annual midwinter bald eagle survey in the Powder River Basin.
The Casper Star-Tribune reports (http://bit.ly/1fAEoOD ) volunteers counted 354 eagles, the highest number since the counts began in 2006, although more routes were added this year. Survey totals vary with weather, availability of food and routes covered each year.
Of the 354 eagles, 239 were bald eagles, 91 were golden eagles and 24 were eagles of an undetermined species. Only about 10 to 12 bald eagle pairs nest in the area and live there throughout the year. The other birds migrate to Alaska in March and April
The data helps the Bureau of Land Management determine important habitat in northern Wyoming's Campbell, Johnson and Sheridan counties.
Information from: Casper (Wyo.) Star-Tribune, http://www.trib.com