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
Origin of birds that the earliest birds and their immediate ancestors did not climb trees. This study determined that the amount of toe claw curvature of early birds was more like that seen in modern ground-foraging birds than in perching birds. "Archaeopteryx" was the first and for a long time the only known feathered Mesozoic animal. As a result, discussion of the evolution of birds and of bird flight centered on "Archaeopteryx" at least until the mid-1990s. There has been debate about whether "Archaeopteryx" could really fly. It appears that "Archaeopteryx" had the brain structures and inner-ear balance sensors that birds use to