Tiny but mighty!
A ferruginous pygmy owl (Glaucidium brasilianum) watches from its post in Guyana. These small raptors are common in South and Central America and can be found as far north as the southwestern United States. They are crepuscular, meaning they hunt at dawn and dusk, but will sometimes hunt by day as well, making them an owl species you have a decent shot of seeing without staying up all night. But still, you'll have to keep a sharp eye out because this species averages only between 6.5-7 inches tall!
Just because it is small in stature doesn't mean it is not a tough and fearsome predator. Though it mostly hunts insects and lizards, other birds aren't exactly friendly toward it. WhatBird notes, "This bird can be readily located by the small birds that mob it while it is perched in a tree. Up to 40 birds of 11 species have been recorded mobbing one owl." There's good reason for this behavior: though insects and lizards are common prey, this little raptor can take down small birds as well. Owl Pages notes, "Birds up to the size of a dove have been recorded as prey. This owl has powerful talons and is able to catch prey larger then itself."