I seem to need three crackers. The guide says to go the dino and the bird will show up, but no, he doesn't, unless I give him a cracker on the beach. He then shows up on the dinosaur, but only gives me the clue to the rocks and I have none left to give him on the rocks.

I can give him both crackers on the beach for the same result.

I'm stuck at the rocks. Just going east from there doesn't get me to the "X"