"What if these barnacle geese could build their nests on cliffs? Then nobody would bother their chicks."

"Decent idea, evolution. But what are they going to eat up there?"

"Well, the food is on the ground. Marsh grass and stuff. I mean, they're geese."

"Okay, but how are the goslings going to get down to find food before they learn how to fly? They're like 400 feet up."

"Oh, I'll figure something out."