Black-capped chickadees, dark-eyed juncos and cardinals congregate around a backyard feeder as birdseed falls to the grass like sprinkles. Suddenly, from the sky comes a flash of vivid green and blue, ...

A nesting association between invasive and native bird species can counteract predators to aid the spread of an invasive species across non-urban habitats, where the invasives may become crop pests A ...