Why do owls hoot?

Answer: Territory and mate communication

Territory and mate communication ✓ — Correct! Vocal territory and mating! Owls hoot for: (1) Territory defense—'This area is occupied!' (2) Mate attraction—species-specific calls. (3) Pair bonding—duets between mates. (4) Contact calls—locating family members. Each species unique hoot pattern (Great Horned: 'hoo-hoo-hoo'). Males typically hoot more (territorial). Not all owls hoot—screech owls screech, barn owls hiss/screech. Nocturnal communication—sound travels well at night. Also: silent flight for hunting!

Calling their young back home — Wrong. Owls don't hoot to call their young—chicks stay in the nest until they can fly. Hooting is primarily territorial defense and mate attraction, used mainly by adult owls.

Echolocation like bats use — Wrong. Owls don't echolocate—they use exceptional hearing and vision. Hooting is vocal communication for territory and mating.