Brian eats six of the eggs raw and then decides to store the rest to eat more slowly.
When you are stranded alone in the wilderness, getting food can be very difficult. Brian is pretty clever in this area. In the matter of the eggs, however, he had cleverness and luck. Brian noticed something had been there, and then realized it was a turtle laying eggs. The eggs are a source of food and protein for days.
More than eggs, more than knowledge, more than anything this was food. His stomach tightened and rolled and made noise as he looked at the eggs, as if his stomach belonged to somebody else or had seen the eggs with its own eyes and was demanding food (Chapter 10).
Brian realizes he has no idea how to eat the eggs as he digs them out and makes a pyramid out of them. He has no way to cook them. He is grossed out at first, but before he knows it, he has eaten six of the eggs raw.
He would store them in the shelter and eat only one a day. He fought the hunger down again, controlled it. He would take them now and store them and save them and eat one a day, and he realized as he thought it that he had forgotten that they might come. The searchers (Chapter 10).
Brian buries the eggs in his shelter near his sleeping area. He soon gets over the gross-out factor because an egg is ready food. Brian needs food because he is still waiting for someone to rescue him.
This is an example of Brian's attentiveness and his ability to use opportunities. Brian never stops being on the lookout. He is not squeamish, either. He did not like eating the eggs at first, but he got over it. You have to do what you can to survive.