“normal” beaks (examples shown of a petrel and a gull) and a bird with a tactile bill-tip organ (a tinamou, close relative of ostriches and emus and which has an ancestral bill-tip organ ...

They use the curved hook at the end of their beaks to help them methodically hunt for caterpillars. Fill your favorite backyard feeder with sunflower seeds and wait for birds with cone-shaped ...

But why is a barred owl more of a baritone, while a cedar waxwing is a soprano? And what influences a bird’s vocal range, and the kinds of sounds it can make? Beak size? Body size? Geography? To ...