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The mountain hawk-eagle, Flores hawk-eagle (which is the only hawk-eagle in its small-island range) and Legge's hawk-eagle, in decreasing magnitude of size, are all are larger and bulkier than the changeable hawk-eagle whereas other Nisaetus species are smaller to varying degrees, distinctly so in the Wallace's hawk-eagle and Blyth's hawk-eagle.
This sexual difference in size is most pronounced in active species that hunt birds, such as the Accipiter hawks, in which the size difference averages 25–50%. In a majority of species, such as generalist hunters and rodent -, reptile -, fish -, and insect -hunting specialists, the dimorphism is less, usually between a 5% to 30% size difference.
The Accipitriformes (/ æ k ˌ s ɪ p ɪ t r ɪ ˈ f ɔːr m iː z /; from Latin accipiter 'hawk' and formes 'having the form of') are an order of birds that includes most of the diurnal birds of prey, including hawks, eagles, vultures, and kites, but not falcons.
Legge's hawk-eagle appears to be about 10% smaller than mountain hawk-eagles and was found to differ in almost all bodily proportions from mountain hawk-eagle, with relatively smaller wings but the smaller species also has a larger bill and larger talons than the mountain hawk-eagle. [6] [12] [15] A subadult mountain hawk-eagle in flight in ...
The African hawk-eagle is powerfully built and hunts small to medium-sized mammals and birds predominantly, occasionally taking reptiles and other prey as well. [4] The call is a shrill kluu-kluu-kluu. [5] The African hawk-eagle is considered a fairly stable species and a species of Least Concern per the IUCN. [1]
[7] [84] As in other areas where booted eagles and sea eagles have abutting ranges, sometimes wedge-tailed eagles compete with white-bellied sea eagles. [85] One key difference from elsewhere where competition sometimes occurs such as the golden eagle with the white-tailed eagle (Haliaeetus albicilla) in Eurasia and the bald eagle (Haliaeetus ...
Aquila is the genus of true eagles. The genus name is Latin for "eagle", possibly derived from aquilus , "dark in colour". [ 1 ] It is often united with the sea eagles , buteos , and other more heavyset Accipitridae , but more recently they appear to be less distinct from the slenderer accipitrine hawks than previously believed.
More surprisingly, the smaller, much paler-bellied sister species Bonelli's eagle (A. fasciatus) and African hawk-eagle (A. spilogaster), previously included in the genus Hieraaetus, have been revealed to be genetically much closer to the Verreaux's and golden eagle lineage than to other species traditionally included in the genus Aquila.