ALBANY, N.Y. — Reports from tens of thousands of bird-counting volunteers show a southern invasion of Arctic-dwelling snowy owls has spread to 25 states, and frigid cold is causing unusual movements of waterfowl.
Results are still coming in from the four-day annual Great Backyard Bird Count sponsored by the Cornell Lab of Ornithology, National Audubon Society and Bird Studies Canada. Sponsors say the event, which ended Monday, drew participants from a record 127 countries, surpassing last year’s 110. Most were from the U.S. and Canada.