To steal eggs easy just take a high lvl argent and hang out with a spyglass on a high cliff which is inaccessible by most or all threats. Scout out nests with your spyglass and wait for the right moment (right moment being when the deinonychus are busy attacking something larger/something that will take a bit to kill) and swoop down, hop off your bird, snatch the egg, and fly as fast as you can back to your safe spot. You CAN NOT outrun these things with land mounts (unless you leveled the crap out of it's movement speed) so a flyer with high stamina and decent health and damage is the way to go. I got 8 eggs in about 20 mins using this strat. To hatch I built a stone room and placed 5 stone fireplaces inside.

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