These guys are super easy to steal eggs from if you do it like this.

Get a rex, allosaurus, giga, or wyvern near a nest with several other people (if possible.) then kill the parents make sure they are all dead and the area is safe then dismount and steal the eggs. Or use a pteranodon or other flyer and land on a cliff near the nest and kill the parents with any weapon while pteranodon is on passive.

Hope this helped and check out my other tips!

-a cool person