Common Buzzard Totally Explained

Everything about Common Buzzard totally explained

The Common Buzzard (Buteo buteo) is a big bird of prey, whose range covers most of Europe and extends into Asia. It is typically between 51-57 cm in length with a 110 to 130 cm (48-60 inch) wingspan, making it a medium-sized raptor. There are around 40,000 breeding pairs in Britain. It is usually resident all year except in the coldest parts of its range, and in the case of one subspecies.
   It breeds in woodland, but usually hunts over open land. It eats mainly small mammals, and will come to carrion.
   Buzzards don't normally form flocks, but several may be seen together on migration or in good habitat. The Victorian writer on Dartmoor, William Crossing, noted that he'd on occasions seen flocks of 15 or more at some places.
   This broad-winged raptor has a wide variety of plumages, and in Europe can be confused with the similar Rough-legged Buzzard (Buteo lagopus) and the only distantly related Honey Buzzard (Pernis apivorus), which mimics the Common Buzzard's plumage for a degree of protection from Goshawks.
   The call is a plaintive peea-ay, similar to a cat's meow.

Systematics

This species was first described by Linnaeus in his Systema naturae in 1758 as Falco buteo.
Buzzard subspecies fall into two groups
The western buteo group are mainly resident or short-distance migrants. They are:

Buteo buteo buteo: most of Europe
B. b. rothschildi: Azores
B. b. insularum: Canary Islands
B. b. arrigonii: Corsica and Sardinia
B. b. menetriesi: Caucasus
B. b. harterti: Madeira, doubtfully distinct from nominate buteo

The eastern vulpinus group includes

B. b. vulpinus (Steppe Buzzard): Eurasia: migrant breeder

B. b. japonicus: Japan: resident

B. b. trizonatus (Forest Buzzard): South Africa: resident Two resident forms of islands close to Africa are often assigned to the first group, but appear to be distinct species more closely related to the African Long-legged Buzzard, based on biogeography and preliminary mtDNA cytochrome b sequence data (Clouet & Wink 2000):

Buteo (buteo) bannermani (Cape Verde Buzzard): Cape Verde Islands

Buteo (buteo) socotrae (Socotra Buzzard): Socotra

Steppe Buzzard

The Steppe Buzzard, B. (b.) vulpinus breeds from eastern Europe eastward to the Far East, excluding Japan. It is a long-distance migrant, excepting some north Himalayan birds, and winters in Africa, India and south eastern Asia. In the open country favoured on the wintering grounds, Steppe Buzzards are often seen perched on roadside telephone poles.
Steppe Buzzard is some times split as a separate species, B. vulpinus. Compared to the nominate form, Steppe Buzzard is slightly smaller (45-50 cm long), longer winged and longer tailed. There are two colour morphs; the rufous form which gives this subspecies its scientific name (vulpes is Latin for "fox"), and a dark grey form.
The tail of vulpinus is paler than the nominate form, and often quite rufous, recalling North American Red-tailed Hawk. The upperwings have pale primary patches, and the primary flight feathers are also paler when viewed from below. Adults have a black trailing edge to the wings, and both morphs often have plain underparts, lacking the breast band frequently seen in B. b. buteo.

Forest Buzzard

The Forest Buzzard, B. (b.) trizonatus, is another form sometimes upgraded to a full species. This is a resident breeding species in woodlands in southern and eastern South Africa.
It is very similar to the abundant summer migrant Steppe Buzzard, but the adult can be distinguished with a good view by its whiter underparts and unbarred flanks. The Juvenile differs from the same-age Steppe Buzzard by its white front and tear-shaped flank streaks.
Forest Buzzard, as its name implies, is a species of evergreen woodlands including introduced eucalyptus and pines, whereas Steppe Buzzard prefers more open habitats. However, habitat alone isn't a good indicator for these forms.

Further Information

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