Related: 12 of the biggest birds on Earth Unlike nest-building birds, ostriches dig shallow holes in the sand or dirt to lay ...

Like other flightless birds, emus and ostriches must find places on the ground in which to lay their eggs. They will not be able to build a nest in a tree or on a cliff, say. They actually dig ...

Our females keep their babies inside their own ... This big egg belongs to an ostrich. Some animals, like lizards, lay much smaller eggs and much more of them. During sexual reproduction a sperm ...

Birds lay eggs ... birds like ostriches and emus hatch from eggs that are nearly round. Penguins, however, break the mold: Although the aquatic birds can’t take to the air, their eggs are ...

Birds have feathers and a beak and lay hard-shelled eggs. Many birds are able to fly using their wings, but others such as ostriches are flightless and unable to fly. Some birds like penguins ...

"This may indicate that in the ancient world, people avoided tackling the ostrich and were content with collecting their eggs." The proximity of the eggs to the fire pit discovered in the Beer ...