In July 1992, two Danish birders visiting Patagonia, Arizona reported the first-ever, mega-rare cinnamon hummingbird in the United States. Back then, reporting rare birds required phoning in ...

Holly Merker’s eyes are constantly on the tree tops. During a outing to the John Heinz Wildlife Refuge at Tinicum on the outskirts of Philadelphia, her small frame is bogged down by more gear than a ...

Platforms such as iNaturalist and eBird encourage people to observe and document nature, but how accurate is the ecological data that they collect? In a new study published in Citizen Science: Theory ...

The lights in the auditorium darken. The cacophony of voices subsides. The enormous screen comes to life, displaying a satellite image of Australia and the scattering of islands directly to the north.

A new article shows a blueprint for conserving enough habitat to protect the populations of almost one-third of the warblers, orioles, tanagers, and other birds that migrate among the Americas ...

A subarctic bird has turned up at Presque Isle State Park, drawing birders from across the region to add a prized lifer to ...