An intact, fossilized specimen of the world’s largest egg—of any known species ever on Earth—entered the National Geographic ...

This chapter summarizes when and where ostrich nests in general were started, and by whom; how they grew; how they were attended; what other birds laid in them and when; how large they finally ended ...

Learn when bluebirds nest and lay eggs. How Much Does an Ostrich Egg Weigh? Here's another one of the most amazing egg facts: a single ostrich egg can weigh as much as 5 pounds. Find out what to ...

Two ostrich eggs left in the nest were under attack by a variety of vultures, which were trying vainly to peck through the tough shells. While the Van Lawicks watched and photographed, they ...