The northern saw-whet owl is a species of small owl in the family Strigidae. The species is native to North America. Saw-whet owls of the genus Aegolius are some of the smallest owl species in North America. They can be found in dense thickets, often at eye level, although they can also be found some 20 ft up. The main prey items of the Northern Saw-whet Owl are mice, and especially deer mice of the genus Peromyscus. orthern Saw-whet Owls are forest birds. They breed in extensive forests across northern North America, also sometimes using more open habitats such as the shrubsteppe of the West as long as there are nest sites available. They winter in dense forests across the central and southern U.S. Northern Saw-whet Owls have a distinctive too-too-too song, an insistent series of whistled notes on roughly the same pitch, given at a rate of about 2 notes per second. Males calling to advertise their territory can be heard up to half a mile away. Other males respond with a softer, faster, lower version of the song. Females also use a version of the song during courtship. Saw-whets give whines, guttural sounds, high tssst calls, squeaks, and high-pitched barks. Here is a link so that you can listen to this goofiest of goobers.
The one on the left looks somewhat angry
Perhaps a little peeved