Not all birds of this beak type eat large seeds, though. The American goldfinch, for example, loves thistle, or Nyjer. Its ...

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.

In the avian world, birds showcase an incredible diversity of beaks—some enormous, others unusually long, and some even lethal. All hornbill species have a unique structure called a casque on ...

When a bird’s beak fits well into a corolla (the petals and part with pollen ... The study found that bill–corolla matching had a strong effect on how much pollen birds deposited—but it had no impact ...

“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 ...