Birds in the Spring Birds in the Spring Birds in the Spring is a "Silly Symphonies" animated Disney short film. It was released in 1933. Various birds are seen building nests and caring for eggs. One pair anxiously awaits the hatching of three eggs, then joyfully summon all the other birds to see their new, noisy hatchlings. Time jumps forward to when the hatchlings are fully fledged, learning to sing and fly. One becomes lost and explores the ground, encountering grasshoppers, humming birds and then a rattlesnake that attempts to eat the baby bird. The bird manages to lead the snake into tying itself
Screamer screamers, it is even possible that they evolved from presbyornithid-grade birds, reverting from a filter-feeding lifestyle to an herbivorous one. The three species occur only in South America, ranging from Colombia to northern Argentina. They are large, bulky birds, with a small downy head, long legs and large feet which are only partially webbed. They have large spurs on their wings which are used in fights over mates and territorial disputes; these can break off in the breast of other screamers, and are regularly renewed. Unlike ducks, they have a partial moult and are able to fly throughout the year.