Boreal Owl

Aegolius funereus

Order

STRIGIFORMES

Family

True Owls (Strigidae)

Code 4

BOOW

Code 6

AEGFUN

ITIS

HEAD

Bill Shape: Hooked
Eye Color: Grayish yellow in hatchlings, turning light blue, eventually becoming bright sulfur-yellow in adults.
Head Pattern: Spotted, Unique pattern
Crown Color: Flat black crown with white spotting.
Forehead Color: Black with white spots and fluffy white eyebrows and "moustache". White facial disk rimmed in black.
Nape Color: Black with white spotting.
Throat Color: Black with white spotting.
Cere color: Yellow

BODY

Length Range: 23-25 cm (9-10 in)
Weight: 102 g (3.6 oz)
Size: 3. Medium (9 - 16 in)
Color Primary: Brown
Underparts: White washed with buff-white; belly with thick, vertical brown streaks.
Upperparts: Dark brown with white spotting.
Back Pattern: Spotted or speckled, Mottled
Belly Pattern: Spotted or speckled, Striped or streaked
Breast Pattern: Spotted or speckled, Striped or streaked

FLIGHT

Flight Pattern: Short flights., Rapidly beating wings.
Wingspan Range: 51-66 cm (20-26 in)
Wing Shape: Broad-Wings, Long-Wings
Tail Shape: Rounded Tail
Tail Pattern: Dark Brown
Upper Tail: Dark brown with white spotting.
Under Tail: White
Leg Color: Off-white to yellow-brown feathered.

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Bird Call Credits: The Macaulay Library of Natural Sounds at the Cornell Lab of Ornithology. Martyn Stewart, http://www.naturesound.org, Redmond, Washington USA. The reuse or copying of bird calls in this database is strictly forbidden2.

Field Guide to Birds of North America