Amazing Hawk The Javan Hawk-eagle


Original Name :

Spizaetus nipalensis bartelsi Stresemann, 1924

Subspecies in Indonesia :

None

English Name :

Javan Hawk-eagle

Indonesian Name :

Elang Jawa


DESCRIPTION
Medium sized eagle (adults 60-70 cm) Sexes similar but female ON AVERAGE larger in size. Adult: Dark-brown upperparts, head chestnut-brown, nape yellow-brown. Dark brown to black feathered crown with thin buf margins, prominent white-tipped black crest. Tail dark brown with four black bands, terminating in a thin white band. Underparts whitish to pale rusty-white, white throat emphasized by dark brown to black moustachial and mesial stripes. Breast marked with bold blackish drops and traces of rufous bars, belly and legs barred dark brown. Tail buffy grey with four grey brown bands and a white margin. Tarsus white-feathered with feathers covering the base of the feet. Iris yellow, dark grey to black bill with grey cere, feet yellow. Juvenile/Sub-adult: Upperparts lighter than in adult. The crest, coloured as in adult, shorter but visible. Underparts, head and crown cinnamon-brown, breast and underwings gradually turning white when tail bands and body stripes have fully developed. Lacks the moustachial, mesial and underpart marking and (except for the terminal) tails-bands which gradually develop the following years. Striping appears first near the legs and flanka. Iris bluish-grey gradually turning yellow in second-year birds.


DESCRIPTION

INTERNATIONAL STATUS :
CITES - Appendix II
IUCN – Endangered

INDONESIAN STATUS :
Protected by Indonesian Law as Accipiteridae
* SK Mentan No. 421/Kpts/Um/8/1970
* UU No. 5 tahun 1990
* SK Menteri Kehutanan No.301/Kpts-II/1991
* Keppres No. 4 tahun 1993
* PP No. 7 tahun 1999

PRIME HABITAT :
Lowland and montane tropical rainforest REMARKS Endemic. Since declared as Indonesia’s national bird, the demand of the bird as a status symbol has been subsequently increased in the last decade.
Scientific Classification
Kingdom : Animalia
Phylum : Chordata
Class : Aves
Order : Falconiformes
Family : Accipitridae
Genus : Spizaetus
Species : S. bartelsi Binomial Name : Spizaetus bartelsi Stresemann, 1924


DIAGNOSIS
Typical hawk-eagle with prominent crest.
Distinguished from adult crested subspecies of Javan Crested Hawk-eagle Pernis ptilorhyncus ptilorhyncus by larger size (60-70 cm versus 50 cm) and the much more prominent crest of S.bartelsi , and the characteristic long narrow head of P. ptilorhyncus. Juvenile plumages of S. bartelsi and P. ptilorhyncus show a confusing resemblance but the latter differs by its short unfeathered tarsus, and long narrow head with weak bill and yellow cere. Other possibly confusing eagles are Changeable Hawk-eagle Spizaetus cirrhatus (larger, just vestigial crest), Rufous-bellied Hawk-eagle Hieraaetus kienerii (smaller, shorter crest, whiter below, dark mask), Aviceda jerdoni (smaller, whiter underparts, bare legs),Wallace’s Hawk-eagle Spizaetus nanus (smaller, tail with three black bands), Sulawesi Hawk-eagle Spizaetus lancoelatus (crestless), Booted Eagle Hieraaetus pennatus (smaller, crestless), See also the description of these species in this guide


Comments

Post a Comment

Popular posts from this blog

Fast Swimmer Sumatran Tiger

Image
used to put its prey that can’t do a fast swim into a corner. The Do you know this Sumatran Tiger can swim? In the first time, I was surprised how this tiger can swim, but Sumatran Tiger has a membrane between its toes, that make light of fast swim. Sumatran Tiger is the smallest of all extant tiger subspecies. Its stripes are narrower than other subspecies of tigers' stripes, and it has a more bearded and manned appearance, especially the males. Interesting thing happened when female Sumatran Tiger would born children, its skin become dark green, maybe this one of camouflage thing to distract other predator that can ambush its child. Sumatran Tiger can proliferate anytime without any limitation of season. Female Sumatran Tiger pregnancy takes 103 days, and could born 2 until 3 child, it happened in some research that female Sumatran Tiger could born 6 children in one pregnancy and that a maximum number that Sumatran Tiger could hold. Actually it’s not so hard to conserve Sumatr
Read more

Exotic Blue of Bali Starling

Image
Bali Starling was exotic birds that really admired by birds lover. The tip of the tail and the wings Balinese Starling this was black and in his cheek part to the colored eyes blue clear, a glance apparently like the person that parade by using the paint to his face. The colored part blue clear was not overgrown the hair and birds foots were grayish, this increased the uniqueness from other birds. Male birds and female had the same characteristics. These birds could be only found in the west part of the Balinese forest. The person that the first time described Balinese Starling this was Walter Rothschild he is English citizen during 1912 introduced Balinese Starling in the world of science. The name of his now is used for the Latin name of these birds that is (Leucopsar rothschildi) The fauna of the symbol of the Balinese Province was one of the birds was rarest in the world, and represented the single genus from the kind myna that lived endemic in the Balinese Island in the west
Read more