10,000 Birds

MAY 3, 2016

I purchased my first Sibley— The Sibley Field Guide to Birds of Eastern North America —in 2003. Descriptions are totally rewritten from the 2003 regional guides, and though they are essentially the same material as the 2013 main guide, the text has been re-arranged to emphasize important points in less space.

North America 160

North America 2003 Birds America 160

10,000 Birds

JULY 5, 2022

Vegetation is a key ingredient, and Klem cites a 2013 study that found “bird strikes were correlated positively to window area and negatively to development. The more glass, the more bird kills. A greater number of buildings in a concentrated area without intervening green space results in fewer birds and fewer killed.”

New York City 254

New York City Birds Illinois Science 254

10,000 Birds

MAY 7, 2013

I’m not going to try to explain why people are fascinated by hawks; human-to-avian psychology is not my specialty. Add to that Liguori’s earlier Hawks From Every Angle (2005), the entry from the Peterson Field Guide series, Hawks of North America, second edition , by William S. It’s a Bald Eagle, a hawk. Clark and Brian K.

North America 211

North America Bald Eagle Falcons Owls 211