Vector illustration egg story with hen Vector illustration in cartoon style with hen sitting on ... Alligator Tooth Examination A brave duck dentist is holding open an alligator's mouth so he can ...

Birds also have beaks instead of teeth. Around the world ... and fly all the way to Africa where it is warmer. Birds lay eggs in nests to keep them safe and warm until a chick hatches out.

The toothless beak is a relatively recent invention. Dinosaur birds had teeth, and incubated their eggs for a lengthy three to six months. Research on fossil embryos shows tooth formation took 60 per ...

Hesperornis was a large flightless bird that swam in the oceans and snared fish with a tooth-lined beak. Its small wings ... solid ground to breed and lay eggs. Neither water nor land were safe ...