To our ear, the haunting song of this Hermit Thrush is musical, even ethereal. To another Hermit Thrush, the song signals that a male is laying claim to a territory and seeking a mate. These thrushes, like other songbirds, broadcast a variety of calls. Call notes can signal many things –…

Geese migrate north between February and April, making stopovers along the way to rest and eat. Most are bound for their breeding grounds in the far north. But we’ll hear them again soon, on their way back south in October. Click play and learn how to tell some North American species apart…

When buying seed for your feeders, it’s tempting to get the biggest, cheapest bag. But not all bird seed is the same. Figure out the nutritional value of the seeds and whether your local birds can actually eat them. Black-oil sunflower seeds provide good protein and fat. Other good seeds…

By March in the East, cardinals and other songbirds that don't migrate are already singing heartily to attract mates. Many other birds – including Yellow Warblers – will return north from the tropics in April and May, announcing themselves in song as soon as they arrive in nesting areas…

The Reddish Egret, a particularly glamorous heron, is best known for its startling antics in capturing fish. When fishing, the egret sprints across the lagoon, weaving left and right, simultaneously flicking its broad wings in and out, while stabbing into the water with its bill. Fish…

Most swallow species that nest in North America eat almost nothing except flying insects. When the bugs die off in the fall, the swallows head south to winter in the tropical zones of Central and South America and the Caribbean. However, Tree Swallows can also eat small fruits. If Tree…

When Great Horned Owl eggs hatch, the downy owlets are the size of newborn chickens. Their mother broods them day and night. A few weeks later, the owlets can be left alone while both adults resume hunting at twilight. Great Horned Owl young remain in the nest for about six weeks, then…

With a graceful leap, wings outstretched, Sandhill Cranes welcome the longer days. The stately cranes are courting, renewing an annual dance they perform in earnest as the days lengthen into spring. Sandhill Crane pairs remain together for life, and their spirited dance plays an essential…

En una mañana de invierno en Costa Rica, un colorido coro de aves le da la bienvenida a un nuevo día. Una pareja de soterrey castaños canta un dueto brioso poco antes del amanecer. Desde las copas de los árboles del bosque tropical de tierras bajas, un grupo de tucanes pico iris emite su…

Some plants have evolved fruits with edible flesh that attract birds. When birds swallow the fruit, they also ingest the seeds. They transport the seeds to new spots for the plants to take root. Birds’ digestive systems grind away the hard outer coating of the seed, making it more likely…