The glasses-like feathers around the spectacled owl's eyes give them their name. Some owls don't hoot. Barn owls hiss, and saw-whet owls make a saw-like sound. Fluffy feathers keep the snowy owl warm.

DEAR JOAN: I have a question about owls. Every morning about 5 a.m., an owl roosts in my redwood tree and hoots for at least 20 minutes. I think this is very cool but have questions regarding this ...