A Birdcage (1996)

A father goes to work in the morning, leaving his young son at home. The boy decides to take care of the birds he sees in the backyard, which he thinks have no real home. He builds a birdhouse and eventually the birds flock to his caring owner's backyard garden. When the parents return home in the evening, they find that the previously quiet and peaceful mansion is surrounded not only by birds but by a veritable garden of beasts...