New Jersey's first Broad-tailed Hummingbird, Maryland's first Virginia's Warbler, Maryland's first Pink-footed Goose, the sixth-ever Snowy Owl in Texas, and more rare-bird sightings.

What surveys completed by birdwatchers from May 2010 to November 2011 at six popular birding destinations in Ohio reveal about the economic impact of birding in the state.

How researchers using light-level geolocators have obtained the first evidence that Black Swifts that breed in western North America spend the winter in Brazil in South America.

How the practice of selective logging in coastal old-growth forests in the Pacific Northwest often removes the trees that Marbled Murrelets are most likely to choose as nest locations.

Why biologists believe that the number of endangered Whooping Cranes that breed in Canada and winter in Texas may not reach 1,000 birds, an important goal for the recovery of the species, for another half century.

Why five teams of researchers in the last three years have reached the same disappointing conclusion — that the Ivory-billed Woodpecker is in fact extinct.

How careful observation revealed a plausible explanation for the age-old question of why the Black Phoebe pumps its tail.

How investigators used mitochondrial DNA to pinpoint the origin of vagrant Cave Swallows that show up on the Atlantic coast and around the Great Lakes.

What researchers discovered about the spring arrival dates of birds in New York, the effects of reduced snowpack on ground-nesting birds in the mountains of Arizona, and how higher wind speeds help Wandering Albatrosses in the Southern Ocean.

Why new artificial nests made of foot-long sections of PVC pipe welcome Eastern Bluebirds, House Wrens, and Tree Swallows but repel European Starlings.

How record numbers of Snowy Owls spotted across southern Canada and the northern United States in the winter of 2011-12 changed prevailing opinions about the species.

Why Bay-breasted Warbler and other migrating landbirds congregate along the shoreline of Lake Huron even before green leaves unfurl each spring.

Kentucky's first Parasitic Jaeger, Michigan's first Lucy's Warbler, Wisconsin's first Inca Dove, Nevada's first Sedge Wren, and more rare-bird sightings.

Scientists and birdwatchers describe the effect of prolonged drought on Northern Bobwhite, overwintering waterfowl, owls and migratory birds, and resident species in Texas and neighboring states.

What caused hundreds of Blackpoll Warblers, Connecticut Warblers, and other birds to be killed at a wind farm in West Virginia during their fall migration.

Why Inca Dove, Lucy's Warbler, Brown-crested Flycatcher, and many other western and southwestern bird species turned up east of the Mississippi River in October and November 2011.

Why the American Ornithologists’ Union and other Western Hemisphere ornithological societies want to merge, forming a new group to be called the Society for Ornithology. 

How the Southeastern Arizona Bird Observatory teamed up with Kaytee Wild Bird Products and Cedar Works Feeders to make free feeders and nectar available to hummingbirds after summer wildfires destroyed natural food sources.

How a storm-petrel and a shearwater -- seabirds discovered under widely different circumstances -- became the latest additions to the list of the world's known bird species.

How light-level geolocators provided researchers with revolutionary new insights into the migration and winter ecology of the Veery.

Why scientists believe Barn Swallows breeding in Buenos Aires Province, Argentina, may represent not only a range expansion but a rare col­onization of a continent. 

How researchers and the public can help the U.S. Fish and Wildlife Service determine whether the Eskimo Curlew, listed since 1967 as endangered, should be reclassified as extinct.

What scientists who studied the Green-backed Firecrown in Chile learned about the ability of hummingbirds to remember which flowers provide the best nectar — and when.

How officials ramped up efforts to shrink the population of Canada Geese in and around New York City since 2009, when a passenger jet collided with geese and landed in the Hudson River.

Which warbler species were moved, which genera were done away, and which bird species were added to the latest checklist published by the American Ornithologists' Union.

Cave Creek Canyon is still open for business

Birds perform a multitude of services that contribute to our well-being

Why Whooping Cranes in the eastern population receive less protections than cranes in the west