In Lafayette Park in St. Louis, Missouri, a dozen or so Eurasian Tree Sparrows from Germany were released. But unlike other introduced species such as the similar-looking House Sparrow, they did not spread very far and remained in a limited area in the Midwest. It’s not fully clear why…

Birds called prions have an especially creative approach to getting their food. They pass seawater through their mouths and filter it to catch tiny animals such as krill and other small crustaceans. It’s similar to how baleen whales feed, leading to the prion’s nickname: the whale-bird…

At the end of summer, the once-bright feathers of a male American Goldfinch look ragged. Growing new flight feathers in a process called molting makes him more vulnerable to predators. Before migrating to wintering grounds, many songbirds stop at a secondary location to undergo the awkward…

Songbirds in winter flocks benefit from having other birds nearby. They can recognize warning signals from other species and follow them to sources of food. We think of BirdNote’s audience as our flock, and we’re much stronger together than as individuals. BirdNote is an independent…

In the summer of 2026, conservation photographer Gerrit Vyn visited a remote wilderness called the National Petroleum Reserve in Alaska. He spent much of June at Teshekpuk Lake, just 6 miles south of the Arctic Ocean. The vast wetlands in this region are critical for millions of birds that…

La reinita caridorada ( Setophaga chrysoparia), también conocida como chipe cachetes amarillos, es una especie en peligro de extinción y el único pájaro que anida exclusivamente en el centro de Texas. Los machos llegan en marzo a reclamar su territorio en los bosques de junípero y roble —…

In the summer of 2026, conservation photographer Gerrit Vyn visited a remote wilderness called the National Petroleum Reserve in Alaska. He spent much of June at Teshekpuk Lake, just 6 miles south of the Arctic Ocean. The vast wetlands in this region are critical for millions of birds that…

With their excellent sense of smell, pigs are renowned for sniffing out truffles, a fungus that grows underground and is prized for its taste. But it turns out that some bird species can also find their way to a truffle treat. Researchers working in the Patagonia region of Chile had…

Em De Blas has years of experience leading bird outings with Chicago BIPOC Birders, the Chicago Ornithological Society, and The Urban Birding Festival. But their birding journey first started when Em was 19 years old and visiting family near San Luis Potosí in Mexico. In this episode, Em…

In this episode of BirdNoir, Private Eye Michael Stein helps a lakefront resident get to know the avian neighbor that’s been flying by each day.