The Egg Collector is a 1940 Merrie Melodies cartoon starring Sniffles.
Sniffles reads a book about egg collecting. The book says that the great barn owl is very gentle, excluding the fact that it's one of the things on its appetite is rodents. Unaware of what a rodent actually is, Sniffles and his friend the bookworm go in search of an egg. The pair travel to a church hoping to obtain one from a barn owl, and instead leave with a baby owl.