Great Grey Owl
Strix nebulosa
Adults have large, rounded heads with grey faces and yellow eyes with darker circles around them. The underparts are light with dark streaks; the upper parts are grey with pale bars. This owl does not have ear tufts and has the largest facial disc of any raptor. A white collar or "bow-tie" is just below the beak. The long tail tapers to a rounded end. In length, the great grey owl is believed to exceed the Eurasian eagle-owl and Blakiston's fish owl as the world's largest owl. The great grey is outweighed by those two species and several others, including most of the genus Bubo.
ID text from Wikipedia, CC BY-SA 4.0
Mottled Owl
Strix virgata
The mottled owl is a medium-sized owl with adults reaching 280 to 355 mm (11 to 14 in) in length. Females are considerably larger than males; the mottled owl shows the greatest degree of sexual dimorphism of any species of owl. The crown, nape and back are mottled in several shades of darkish brown, the facial disc is pale brown and the throat, breast and belly are off-white with distinctive vertical brown streaks. The large eyes are brown, the beak is greyish-yellow or greyish-blue, and the legs and feet are greyish-yellow. There is a darker form of the bird with a buff breast and belly.
ID text from Wikipedia, CC BY-SA 4.0
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