As Millions of Birds Migrate, Residents Are Asked to Turn Off the Lights
Each species has its own migration pattern.
Some species, such as the dark-eyed junco, nest in Canada and then fly in the winter to the United States, Dr. Osterhaus said.
“These birds are really trying to maximize their survival and fitness,” he said.
Generally, the fall migration contains more birds because the summer’s breeding season has concluded, said Catherine Quayle, the communications director for the Wild Bird Fund, a nonprofit that rehabilitates injured or sickened birds and other animals.
