Raptor Resource Project: Bald Eagle and Bird of Prey Cams

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Tag Archives: adaptations

Can birds detect severe weather? Storms, cold, and Bald Eagles in winter!

December 21, 2022 RaptorResource

Can birds detect severe weather? I’m watching the birds at my feeder as a major snowstorm rolls in. American Golden Finches, Dark-Eyed Juncos, Black-Capped Chickadees, and White-Breasted Nuthatches are decimating my seed feeder, while our resident Downy, Hairy, Red-Bellied, and Pileated Woodpeckers clean out my suet feeder. The feeder action started yesterday. Did our birds know a major storm was on the way? While birds can’t predict long-range weather patterns, they have at least two ways to detect and prepare

Eagle Vocalizations: HD, HM, and Morning Song

December 9, 2022 RaptorResource

HD, HM, Mr. North, and DNF vocalize by using an organ unique to birds: the syrinx, a small two-sided structure that allows birds to make complex sounds. Both sides of a bird’s syrinx are equally capable of producing sound and can be used alone or in concert to sing two different notes simultaneously and complete broad sweeps in pitch quickly. While singing ability and song role varies widely from species to species, a bird generally produces sound by modifying the

Four Foraging Stories from the Flyway

October 29, 2021 RaptorResource

It’s late October and the birds we watch on the Mississippi Flyway are pouring south while local plant and animal populations dwindle in response to diminishing daylight length, colder temperatures, and reduced food availability. How do migrating birds find enough to eat in the diverse, rapidly changing habitats they travel through? Read these four foraging stories to learn more about how birds cope with the challenge of finding food on migration! River Dreaming Picture a Mississippi River lake: a lake

Eagle Eyes!

November 19, 2017 RaptorResource

Has anyone ever called you eagle-eyed? Relative to humans, bald eagles have larger, sharper eyes that see further, collect more details, and produce stereoscopic vision to greatly improve depth perception. A bald eagle’s visual acuity begins with its eye size and shape. Dad’s somewhat tubular eyes occupy over 50% of the volume of his skull, as compared with less than 5% in us spherically-eyed human types. He can voluntarily adjust the curvature of his large cornea and lens (we’re restricted