There are four Easter eggs, and getting all four will take some care. You can get two of them on their own, but you need one egg to get the last two, so keep an eye on them.

Hen In Training

Sunny Side Up

Egg Streme

That's All Yolks! (Bonus Edition Only)

When you have all four eggs, bring them to the score board in the base camp and click them on your score to increase it by 30 points for each egg. This makes the eggs disappear, but look at your amazing score!