While the Bald Eagle may be the biggest story of conservation success in the 20th century, it's made life tough for some colonial seabirds. All the eagles have to do is soar by the cliff, and it causes panic, scaring birds off their nests. Then gulls and crows swoop in and get the eggs…

The breeding success of seabirds along the North Pacific coast, like these Common Murres, depends on the timing of seasonal winds. Spring winds from the Gulf of Alaska cause the upwelling of cold, nutrient-rich water. But if the upwelling is delayed, seabird breeding suffers. Warmer…

Birds see better than we do. Birds see objects in fine detail, two-and-a-half to three times farther away than we can. Their eyes have the most highly developed retina of any animal. Avian sensitivity to the spectrum of light is far beyond ours. This Eurasian Kestrel uses its ability to…

On a November day in the late 1960s, flying in a light plane along the Mississippi River, the eminent waterfowl biologist Frank Bellrose came upon a raft of 450,000 Lesser Scaups that stretched for miles. Protection, restoration, and enhancement of habitats used during all seasons are…

The Wood Duck was once the most abundant duck east of the Mississippi River. But the draining of wetlands, forest fragmentation, and market hunting caused serious declines in their numbers. In 1918, the Migratory Bird Treaty Act banned hunting of Wood Ducks for 23 years. Federal regulation…

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…

Helen Trefry, a wildlife biologist in Edmonton, Alberta, wanted to know where the Burrowing Owls in her part of Canada migrated to. How long did it take them to get to their destinations? Where and how did they spend their stopovers? An amateur radio operator from Texas, along with a…

It is an ancient music. The mating song of the male American Woodcock. To hear it, step out into the dusk of a quiet spring evening in the Connecticut countryside. In the twilight, or in the moonlight, you may hear him more than see him spiral high in his sky dance. The air rushing past…

What does the Winter Wren hear in a song? It's a long story... What we hear as a blur of sound, the bird hears as a precise sequence of sounds, the visual equivalent of seeing a movie as a series of still pictures. That birds can hear the fine structure of song so acutely allows them to…

From atop a thermal, Turkey Vultures in groups of up to 200 sail across the Strait of Juan de Fuca, making landfall near Salt Creek County Park on the Olympic Peninsula. The Olympic Peninsula Audubon Society sponsors a free field trip to witness this autumnal passage. Check out that or…