Seed-eating birds require these strong beaks to exert the force needed to break seed shells. While the conical shape is typical, there can be variations depending on the size and type of seeds the ...

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.

“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 ...

President Higgins leads tributes after death of Matt Murphy, founder of Sherkin Island Marine Station ...

The outer sheaths of birds’ beaks grow continually throughout their lives, but when they are properly aligned, the tips wear each other away and the beak stays straight and normal in length.

In Alaska during the mid-1990s, bird experts noticed an uptick in overgrown, warped beaks among black-capped chickadees. Now, using high-throughput RNA sequencing, researchers at the University of ...

The different finch species on the islands are closely related to each other, but show wide variations in beak and body ... but the most obvious differences between the birds are the size and shape of ...