Experts are on edge, fearing this will be the spring that the "catastrophic" H5 strain of bird flu arrives in Australia.

As September begins, many adult male ruby-throated hummingbirds are heading to their winter homes in southern Mexico and ...

Additions to the breeding avifauna of the lower Rio Grande Valley of Texas / Timothy Brush -- Avifaunal changes in Big Bend National Park, Texas / Roland H. Wauer and Mark Flippo -- Distribution and ...