thicker beaks used for picking insects from the surface of mud or sand. In essence, the bills of wading birds are highly specialized tools that have evolved to maximize their foraging efficiency ...

“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 ...

Bill structure is important in determining what different species of birds are able to eat, so natural selection has played an important role in the evolution of bird feeding habits. In "Meat ...

Under these drastically changing conditions, the struggle to survive favored the larger birds with deep, strong beaks for opening the hard seeds. Smaller finches with less-powerful beaks perished.

When a picture posted on social media in 2015 showed a live albatross with the top half of its beak sliced ... and cutting the bill off to more expeditiously unhook the bird, and then tossing ...