After Daffy's egg rolls down the hill to the crocodile's nest, he retrieves it and goes back up the hill to his nest. But when the crocodile chases after him and retrieves the egg from Daffy, Daffy's nest is no longer on top of a hill. Daffy's nest is now on land that is flat and on ground that is only slightly elevated above the water.
When Daffy first loses his egg, it rolls down a hill to a crocodile's nest. As it rolls down the hill, it passes multiple Cyprus trees. But Cyprus trees do not grow on hills, particularly on sides of hills, where there is good drainage. They need to grow in standing water. This might be true if the contributor knew anything about CYPRESS trees.