In March, we welcome the lengthening days and the renewal of bird song. Among the earliest spring singers in south Texas are White-throated Sparrow, Cassin's Sparrow, and Purple Martin (left). And spring songs are breaking out all over the country. Listen to the songs of these early spring…

In March, we welcome the lengthening days and the renewal of bird song. Among the earliest spring singers in the SE Alaska are American Dipper (left), American Robin, and American Tree Sparrow. Listen to the songs of these early spring songsters and thousands of others at Cornell…

In March, we welcome the lengthening days and the renewal of bird song. Among the earliest spring singers in California are American Robin (left), Fox Sparrow, and Wrentit. Listen to the songs of these birds, plus thousands of others at Cornell University's Macaulay Library website. Learn…

In March, we welcome the lengthening days and the renewal of bird song. Among the earliest spring singers in the Northwest is this House Finch, whose sweet, jumbled song carries along city blocks and rocky canyons. And spring songs are breaking out all over the country. Listen to the song…

Both Douglas squirrels and the firs they call home bear the name of David Douglas. In 1825 and 1826, the Scotsman Douglas tramped and canoed over 6000 miles of the Pacific Northwest, documenting plants and collecting seeds and cuttings. In 1827, Douglas traveled to the Royal Horticultural…

Rounding a bend on a snowy river delta in winter, you see farmland covered in white. It seems surreal, as if the artist Andy Goldsworthy has floated a huge duvet across the landscape. Snow Geese, thousands of them! Snow Geese winter far south of where they nest - on Wrangell Island in…

The plight of the gravely endangered Spotted Owl illustrates the imperiled status of old-growth forest in the Pacific Northwest. More than 90% of that forest is gone, a percentage that dwarfs even the worldwide loss of tropical forests and wetlands. Spotted Owls rely on those ancient trees…

Unlike many other birds that have an inherent sense of direction and destination, young Whooping Cranes have to learn their migration route from the adults. Enter Operation Migration and ultralight aircraft to lead them on their journey! Fortunately, the young cranes need to be shown the…

Tony Scruton is a sentinel of seabirds; he's on the water at least six times a week, year 'round. He has been closely observing seabirds for more than 30 years. And as he tells it, numbers of murres and scoters - like this White-winged Scoter - have dwindled. There are barely one-tenth of…