The dry lakebed of Owens Lake, in Eastern California, was once a major source of pollution. Today, it’s a magnet for birds like these Eared Grebes. How was Owens Lake transformed? Pete Pumphrey of Eastern Sierra Audubon, explains: “The Los Angeles Department of Water and Power was ordered…

Because the Marbled Murrelet lays only one egg, its odds of raising a family are slim. Steller's Jays – as they frequent campgrounds in the redwood forests of northern California, looking for human handouts – further threaten murrelet reproduction by eating their eggs. Fortunately…

It can be difficult to identify a bird by its appearance, and just as challenging to do so by its song. But birding by ear is a great way to get to know birds. A blind birder in Kitsap County, Washington, was puzzled by a haunting bird song. She thought it might be a special song of the…

In the early 1980s, the city of Austin, Texas needed to enlarge its Congress Avenue Bridge. The new bridge design included expansion joints that inadvertently created roosting cavities for bats - tiny Mexican Free-tailed Bats - eventually one and one-half million of them! At first, many…

A pigeon pacing up and down anxiously in Central Park sees his friend hop up on the curb. "Where have you been? I've been waiting for hours!" The new arrival says, "It was such a nice day, I decided to walk!" This laugh track also includes gulls, ducks, and chickens. Email us your own bird…

Point Reyes Bird Observatory -- now known as Point Blue Conservation Science -- works to understand how healthy ecosystems function and to reduce the harmful effects of climate change. For example, in the Farallon Islands (pictured here courtesy of Marty Knapp), scientists recorded…

Brown-headed Cowbirds lay their eggs in other birds' nests. And these birds raise the cowbird chicks - often at the expense of their own young. This beautiful Yellow Warbler is a frequent target of the cowbird's unwelcome eggs. But it has developed a way to reject the role of foster parent…

For 30 years, Robert Otto (pictured here) has been putting up nest boxes for bluebirds near his home in northern Michigan. A retired mechanical engineer, Robert has designed and built nest boxes that are easy to maintain and make it simple to check for eggs and fledglings. There are now…

Williamson's Sapsuckers nest in western mountain forests. The radically different plumages of the male and female so confounded 19th-century naturalists that, for nearly a decade, the birds were thought to be of different species. Sapsuckers are unique among woodpeckers in drilling neat…

Red flowers, and of course red feeders, are often rich sources of food for hummingbirds, including this Broad-tailed Hummingbird. Nectar is high-octane fuel for their intensely active way of life. The hummingbirds' sense of color is due to the dense concentration of cones in its retina…