But have you ever wondered why so many birds have red beaks? In some cases, a red beak helps them attract mates. For others, it helps with camouflage in their natural habitat. In most cases ...

Don't let this red pouch distract you too long, though. Otherwise, you might miss out on its long and crooked beak! All in ...

a red pouch hanging from his throat. When he inflates this gular sac, it balloons into a heartlike shape as tall as he is. Then he clacks his beak, and it resonates in the sac like a drumbeat ...

The photographs show the underside of the beak bones, and the red struictures on the right show ... similar to that of the birds with known bill-tip organs.

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.