a comprehensive resource of avian nutrition research for captive bird populations

Great Grey Owl

Strix nebulosa

Strigiformes - Stigidae - Owls

Great Grey Owl - Great Grey Owl

© Phil Clayton

Great Grey Owl - Great Grey Owl

Wild diet: Small mammals, rodents, birds up to the size of grouse, frogs & large insects. During breeding mostly voles (90% of diet). Other mammals include mice, squirrels and hares.

Feeding strategy: Hunts from perch, flies up to 100m to strike. Grab prey with feet & talons. Can detect prey by sound. Swallow small prey items whole - larger prey items are pulled into pieces.

Wild weight ranges: Male 800 - 1175g Female 925 - 1700g


Wild data

Del Hoya, J., Elliott, A. & Sargatal, J. eds. (1999). Handbook of the Birds of the World. Vol.5. Lynx Edicions, Barcelona.

Diet and optimal foraging of great Grey Owls >

Ecology of the Great Grey owl >

Captive data information

Examples of diets in use

There are no diets in use yet for the Great Grey Owl.

Please keep us up-to-date and contact us with your own updates or new diets used for the Great Grey Owl.

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