Ketupa blakistoni
The Blakiston's Fish Owl, *Ketupa blakistoni*, is a majestic and highly specialized raptor, often considered the world's largest living owl by weight. Adults typically measure 60-72 cm (24-28 in) in length, with a wingspan ranging from 178-190 cm (70-75 in) and weighing 2.95-4.6 kg (6.5-10.1 lb), females generally being larger. Its plumage is a warm, yellowish-brown with prominent dark brown or black streaking across the body, giving it a cryptically mottled appearance ideal for forested rive...
Primarily inhabits dense, old-growth riparian forests along clean, slow-moving rivers and lakes, requiring large trees for nesting and roosting. Typically found at low to mid-elevations where water bodies remain unfrozen year-round or for extended periods.
Primarily piscivorous, consuming a wide variety of fish, but also preys on amphibians (frogs), crustaceans, small mammals (voles, shrews, muskrats), and waterfowl. Forages by snatching prey from the water surface or wading into shallow streams.
Blakiston's Fish Owls are predominantly nocturnal and crepuscular, spending daylight hours roosting in dense tree cover close to water, often returning to the same favored perches. Their foraging strategy is highly specialized: they typically hunt by perching on a low branch over water, waiting f...
The Blakiston's Fish Owl has a fragmented distribution across East Asia, primarily concentrated in the Russian Far East, northeastern China, and Hokkaido, Japan. Its breeding range encompasses the Amur and Ussuri River basins in Primorye and Khabarovsk Krais of Russia, extending into Heilongjiang...
Endangered
- The Blakiston's Fish Owl is often considered the heaviest owl in the world, with females sometimes weighing over 10 pounds (4.5 kg). - Its unfeathered legs and specialized rough scales on its powerful talons provide a superior grip for catching slippery fish. - Unlike most owls, it can wade int...