The weather can sometimes make us believe that we are going just a tad crazy. It mostly happens in the summer when we have the hot sun continuously shining down on us. Which is why it's important to wear a hat. Is it the sun that can sometimes make us a little delusional or do our eyes play trick on us?
Blacky the Crow is so convinced that he saw an egg sitting in the nest that he has to go see it for himself. Sometimes we just need to make sure that we aren't going crazy.