One of the most common owls in forests across northern North America (and across the U.S. in winter), saw-whets are highly nocturnal and seldom seen. Their high-pitched too-too-too call is a common evening sound in evergreen mountain forests from January through May.

Northern Saw-whet Owls breed in forests across southern Canada and the northern and western United States, extending through central Mexico. They seem to prefer mature forest with an open understory for foraging, deciduous trees for nesting, dense conifers for …

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.

2019年10月9日 · There, studies of the saw-whet’s closest relative, the Boreal Owl (or Teng­malm’s Owl, as it’s known in Europe), have documented adult males remain­ing in their northern breeding range through the winter.

A tiny owl with a catlike face, oversized head, and bright yellow eyes, the Northern Saw-whet Owl is practically bursting with attitude. Where mice and other small mammals are concerned this fierce, silent owl is anything but cute.

Adult (Northern) Medium-sized owl with a rounded head and tiny ear tufts that are difficult to see. Heavily streaked overall with dark eye patches and whitish face.

2018年2月16日 · Northern Saw-whet Owls are slightly smaller than Boreal Owls, with a diffuse buff-brown margin around the face instead of Boreal's sharp dark border. Saw-whets have neat lines of white spots on the back, whereas Boreal is more evenly spotted across the back.

2000年7月1日 · Boreal Owls are slightly larger than Northern Saw-whet Owls, with a crisp dark border going most of the way around the face. Boreal's facial disk is clean white, whereas Saw-whet's is tinged with buff.

One of the most common owls in forests across northern North America (and across the U.S. in winter), saw-whets are highly nocturnal and seldom seen. Their high-pitched too-too-too call is a common evening sound in evergreen mountain forests from January through May.

One of the most common owls in forests across northern North America (and across the U.S. in winter), saw-whets are highly nocturnal and seldom seen. Their high-pitched too-too-too call is a common evening sound in evergreen mountain forests from January through May.