09-11-13 Migration Field Note

09-11-13 Migration Field Note

September 11, 2013

Eric Rasmussen, the Avian Science Center, and Raptor View Research describe Golden Eagle migration gps tracking, and fall songbird migration banding efforts.

Download (1.76 MB)

Migration Field Note September 6th, 2013 Eric Rasmussen, Kate Stone Raptor View Research Avian Science Center

Raptor Migration Update

An immature red-tailed hawk makes a pass at the decoy owl and briefly inspects our site.

site. Raptor View Research Institute: Golden Eagle Update

Golden Eagle 110270, the first eagle outfitted with a GPS, spent two summers in the same area of southeastern Alaska. His movements this summer extended further to the northwest. He exhibited a larger home range than any of the other eagles.

Eagle 110271, also trapped in 2011-2012, showed high fidelity to her range from last year. She rarely traveled more than three miles from her suspected nesting location. She showed the smallest summer range of the six Golden Eagles tracked this season. Her transmitter recorded no movement the past few weeks, suggesting it either broke off or she died.

Eagle 117188 traveled further north than all other eagles monitored by RVRI. After wintering in the Bitterroot Valley, she traveled within 50 miles of the Arctic Ocean, presumably to breed.

breed. 117411, an adult female, spent this summer on the eastern end of the Seward Peninsula, where the Bering Strait departs from the mainland.

Eagle 117184, an adult male, maintained a breeding territory along the coastal range of northern British Columbia.

opportunities. Eagle 117184, an adult male, maintained a breeding territory along the coastal range of northern British Columbia. Avian Science Center: Fall Migration Banding

A Wilson’s Warbler, one of seven warbler species caught this week, displays its vibrant plumage (above). MPG Ranch staff visit the banding station. Teagan releases a juvenile Cedar Waxwing (below).