Aleutian Cackling Geese, which have a slighter build and shorter beak than Canada Geese, build their nests on a chain of islands off the western coast of Alaska. In the 1700s, fur traders introduced foxes to the islands, nearly wiping out the geese. For decades, they were believed to be…

In some years, tawny-colored thrushes called Veeries cut their breeding season short. Researchers discovered that Veeries tend to stop breeding early in the same years that the Atlantic hurricane season is particularly severe. Surprisingly, Veeries are sometimes better at predicting…

En algunos años, unos zorzales canelos ( Catharus fuscescens), también llamados zorzalitos rojizos o colorados, acortan su temporada de reproducción. Los investigadores descubrieron que los zorzalitos canelos tienden a dejar de reproducirse antes de tiempo en los mismos años en que la…

Kelsey Leonard is a leading scholar in Indigenous water governance, climate justice, and Earth law. In the latest season of Bring Birds Back, Kelsey explores the storied relationship between Indigenous people, wetlands, and birds. Kelsey says waterfowl hunters have helped to document that…

Most of the bird sounds you hear on BirdNote come from the Macaulay Library, a vast collection of over one million bird calls and songs curated by the Cornell Lab of Ornithology. The library relies on both professional field recordists and dedicated volunteers to capture the sounds of…

Corvids, like crows and jays, are known for caching seeds instead of eating them immediately. Sometimes, those seeds take root before the birds return. Mario Pesendorfer, a forest and behavioral ecologist at BOKU in Vienna, says that’s what happened on Santa Cruz Island in southern…

Las estrellas parecen girar en el cielo, lo que plantea una gran pregunta: ¿cómo logran las aves usarlas para orientarse durante la migración? El ornitólogo Stephen Emlen llevó azulillos índigo ( Passerina cyanea), también llamados colorines azules, a un planetario y observó sus…

The stars appear to rotate in the sky, raising the question of how birds can use stars to navigate during migration. Ornithologist Stephen Emlen brought Indigo Buntings to a planetarium, tracking their movements as the simulated night sky changed above them. The buntings oriented…

The Santa Marta Sabrewing is a hummingbird species so rare, they’ve only been documented twice in recent years. Native to the mountains of Colombia, they were officially described in 1946. No one reported another sighting until 2010. They became a “lost” species, eluding every attempt to…

The Magellanic Plover is known for being a bit of an oddball. These shorebirds have a round body like a dove and even feed their young with milk produced in a part of their digestive system called the crop — a rare trait they share with doves. But genetic data revealed that Magellanic…