Museum scientist Gary Graves has spent decades investigating why red-billed and black-billed streamertail hummingbirds remain distinct species despite on-going hybridization Erin Wunderlich Gary ...

Sometimes nature surprises us with extraordinary products of evolution. One prime example is the extraordinary sword-billed hummingbird (Ensifera ensifera). These relatively small birds have carved a ...

Birds are admired for their beauty, songs and flight. But in the wild a beak is far more than a feeding tool as it is a weapon of survival. For some species their beaks are strong enough to crush ...