BirdNote

Hacia finales de febrero o marzo, los tecolotitos enanos emigran de México para reproducirse en Estados Unidos. Estos diminutos búhos pesan menos de 40 gramos, un poco menos que una pelota de golf. Durante la temporada de reproducción, los tecolotitos enanos viven en bosques y hábitats de cactus en

Shortly after the Russian invasion of Ukraine in February of 2022, zookeepers at the Kyiv Zoo shared audio recordings from the animal enclosures with BirdNote. The Zoo staff maintained care for the animals even as they slept in bomb shelters. Two and a half years later, Zoo Program Manager Olga

Kingbirds are robin-sized flycatchers that excel at plucking insects from the air. They’ll even tackle prey as big as cicadas. Finding naturally-camouflaged cicadas hidden among the leaves is hard work. But two species of kingbirds in Arizona found a shortcut — stealing them from cicada-killer wasps

The glorious song of the male Sage Thrasher rings out every Spring from tracts of sagebrush throughout the west. Sagebrush was once widespread in the Great Basin region, and so were the thrashers. But huge areas of sagebrush were turned into alfalfa and potato farms, and the songs of the thrasher

House Finches are familiar birds all across North America. Researchers have shown that the red coloration of males is produced from carotenoid pigments in the birds' diet. Male House Finches develop brighter plumage when they are growing in new feathers, if they eat more fruits containing

This month, we’re celebrating BirdNote’s 20th anniversary. Twenty years is a long time, but we can’t hold a candle to Wisdom the albatross, the world’s oldest-known wild bird who is at least 74 years old. Here’s to many more years — for BirdNote, and for Wisdom.

Tree Swallows and bluebirds — like this Western Bluebird — are among the earliest northbound migrants to arrive, heralding spring a month before the equinox. These species will nest only in cavities, such as old woodpecker holes or man-made nest boxes. But the supply of specialized nest sites is

La naturaleza produce algunos animales extraordinariamente extraños. Una de estas criaturas es el guácharo del norte de Sudamérica. El guácharo tiene una dieta basada en bayas silvestres y frutas, especialmente de las que son ricas en grasas, como nueces de palmas de aceite y aguacates (lo que

During winter and early spring, Great Blue Herons build their nests high in the treetops. The male delivers the supplies to the nest site stick by stick, as the female arranges things. It’s the perfect childhood home for their young, made without blueprints, architects or engineers. But by early May

Upland Sandpipers are an emblematic bird of grassland habitats in many regions of the Americas. These shorebirds live far from sea with the largest breeding populations in the north central U.S. But Upland Sandpipers are losing breeding ground to row-crop agriculture, pushing some birds to nest at