Heidi - Song of the Birds (1977, Short Cartoon)

Heidi tries to befriended the cat and four shoes. Then a little bird just learning to fly is her first victim, but when the bird's mother mourns over it, Heidi frightens the bird and he bumps the tree bark. Heidi feels remorse. The animals stage an elaborate funeral for the little bird. But during the funeral, some rain falls on it, and revives it we discover it was only stunned. Heidi tries to befriend the birds.