As the biggest of all the Owls the Eagle owl is easily recognised by its huge size and wingspan. It is more correct to call this species the Blakiston's eagle owl. Verreaux's Eagle Owl ~ Bubo lacteus Introduction. Photo Gallery (2 pictures) Sound Gallery. The Cape Eagle-Owl is a larger bird, 48–54 cm, although it is still not easy to distinguish them on size alone, especially in the field. It is the largest owl in Africa. Taxonomy. Their classic to-whit-to-woo call is the combined cries of the male and female. Giant eagle owls (Bubu lacteus), also known as Verreaux's eagle-owl or the milky eagle owl, not only use the old nests of secretary birds or eagles for breeding, but also the top of sociable weaver and hamerkop nests. It can call from a steady perch, usually concealed, for lengthy periods. Little owl (Athene noctua) hiding in a drainpipe. This comical owl has established itself well since its introduction in Kent in 1879. They raise one chick, sometimes two of them, which stay with their parents until the next breeding season the following year. Photo Gallery (11 pictures) The Verreaux's Eagle Owl is a very large eagle owl with short, tousled ear-tufts. The Giant Eagle Owl is the largest owl in the world. Typical call - Mindanao, Philippines. April 2010. It is a rufous-brown rather than grey and has orange eyes rather than yellow, but it is not easily distinguished from the rufous form of the Spotted Eagle-Owl. It is also known as the Lesser Eagle Owl or the Mindanao Owl. The male pitch has more bass than the female. The Giant Scops Owl is a relatively large brown owl with long, slightly curved ear-tufts. This is because it is more closely related to the Eurasian eagle-owl (by studies of the main subgenus of the species, B. b. dumeril), than to the subgenus of fish owls that it was believed to be more close to, i.e. It is also known as the Milky Eagle Owl or the Giant Eagle Owl. The pitch is fairly consistent, with little, if any range. Little owl (Athena noctua) Conservation status: not assessed . Some authors place this owl in its own genus Mimizuku. They are light grey in colour, finely bared blackish above and below but no heavy blotching. Formerly known as the Giant Eagle-Owl (Bubo lacteus), its call is an unmistakable sequence of initial deep single nasal like “woks” followed by a number of these strung together. The Spotted Eagle-Owl can be confused with the Cape Eagle-Owl (Bubo capensis). Height 8½in, wingspan 22in.