Everything about The Mountain Hawk-eagle totally explained
The
Mountain Hawk-eagle or
Hodgson's Hawk-eagle (
Spizaetus nipalensis) is a
bird of prey. Like all
eagles, it's in the family
Accipitridae. It breeds in southern
Asia from
Pakistan,
India and
Sri Lanka to
China and
Japan.
The Mountain Hawk-eagle is a medium-large raptor at about 70-72cm in length. The typical adult has brown upperparts and pale underparts, with barring on the undersides of the flight
feathers and tail. The breast and belly and underwing coverts are heavily streaked. The wings are broad with a curved trailing edge, and are held in a shallow V in flight. Sexes are similar, but young birds are often whiter-headed.
The Sri Lankan
subspecies (
S. n. kelaarti) is smaller and has unstreaked buff underwing coverts. The Japanese subspecies
S. n. orientalis is larger, lighter, and has only a very small crest, which is large in the other two subspecies.
The heavier underpart streaking and wing shape help to distinguish this species from the similar
Changeable Hawk-eagle, (
Spizaetus cirrhatus).
It is a
bird of mountain woodland, which builds a stick nest in a tree and lays usually a single
egg. Mountain Hawk-eagles eat small
mammals, birds and
reptiles.
Not considered a globally
threatened species, the Japanese population is declining however. As the species is a
K-strategist like all eagles, it was feared that the ongoing population reduction of
S. n. orientalis might lead to loss of genetic diversity, and consequently
inbreeding depression. However, genetic diversity was shown to be still considerable at present.(Asai
et al. 2006)
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