Editing Changeable hawk-eagle (section)

===Confusion species===
[[File:The Weapon.jpg|thumb|The formidable talons of the changeable hawk-eagle]]
The changeable hawk-eagle is almost always the most common and/or most widely spread ''Nisaetus'' species anywhere in their range. Their distribution overlaps with the entirety of the distribution of the (newly recognized) [[Legge's hawk-eagle]] (''N. kelaarti''), most of the range of the [[Javan hawk-eagle|Javan]] (''N. bartelsi''), [[Blyth's hawk eagle|Blyth's]] (''N. alboniger'') and [[Wallace's hawk-eagle]] (''N. nanus'') and partially overlaps with the ranges of the [[mountain hawk-eagle]] (''N. nipalensis''), the [[Philippine hawk-eagle]] (''N. philippinus'') (on [[Mindoro]] and possibly [[Palawan]]) and [[Pinsker's hawk-eagle]] (''N. pinskeri'') (on [[Mindanao]]). Only two species of the genus ''Nisaetus'' are outside the changeable hawk-eagle's normal distribution (including their own former subspecies, the [[Flores hawk-eagle]]).<ref name="iucn" /> In range with most other ''Nisaetus'' species (such as the islands or mainland of [[southeast Asia]]), the changeable hawk-eagle is more likely to be almost crestless. Other species tend to have proportionately broader wings with more bulging secondaries, relatively shorter tails and, as adults, more barred underbody and unique tail patterns. Adult colour patterns can range from somewhat different to boldly distinct (especially in the black-and-white Blyth's hawk-eagle). Juveniles tend to be more difficult to distinguish but usually most other ''Nisaetus'' have less white showing than relevant changeable hawk-eagles and the changeable tends to show a slightly stronger V while in flight. 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.<ref name= Ferguson-Lees/><ref name="Robson">Robson, C., & Allen, R. (2005). ''Birds of Southeast Asia: Thailand, Peninsular Malaysia, Singapore, Vietnam, Cambodia, Laos, Myanmar''. Princeton University Press.</ref><ref>Nijman, V., & Soezer, R. (1998). Field identification of the Javan Hawk Eagle Spizaetus bartelsi. Forktail, 13-16.</ref> As many [[Pernis (bird)|honey buzzard]]s are thought to mimic more powerful raptors to protect themselves from predation, the [[crested honey buzzard]] (''Pernis ptilorhynchus'') is thought to mimic the general appearance of ''Nisaetus'' hawk-eagles but has a distinctly smaller head and longer and narrower wings than changeable hawk-eagles. Adult crested honey buzzards are barred but the juvenile is streaked rather like the changeable hawk-eagle, however if seen well the honey buzzard generally looks much more solidly orange-buffy as a base colour rather than whitish below. The flight actions of the honey buzzard are also distinct, with a more robotic even flap during flights.<ref name= Ferguson-Lees/><ref name= Robson/><ref>Decandido, R., Siponen, M., Smit, H., Pierce, A., & Allen, D. (2015). ''Flight identification and migration pattern of the Oriental Honey Buzzard Pernis ptilorhynchus orientalis in southern Thailand, 2007–2014''.</ref> Juvenile [[crested serpent eagle]]s, which are unlikely to be mistaken for the changeable other than at a distance and in flight, appear chunkier and less rangy with a bigger head, slightly longer wings and a substantially shorter tailed with fewer bars (these differences in proportions are generally applicable to various island serpent-eagle species that may be found with changeable hawk-eagles as well). Juvenile [[rufous-bellied eagle]]s (''Lophotriorchis kienerii'') are rather smaller and more compact with a relatively longer winged and shorter tailed appearance. The rufous-bellied juvenile when compared to the juvenile changeable is generally purer white looking below which contrasts more strongly with their sparse blackish streaks. Dark morph changeable hawk-eagles may be confused with the similarly sized but even more slender [[black eagle]] (''Ictinaetus malaiensis''). However, the latter is much longer winged with distinctly pinched-in bases, a uniformly dark tail and has small light feather bases only to primaries. Also dark morph can be told from dark morph [[booted eagle]]s (''Hieraeetus pennatus'') by the latter being rather smaller, much shorter tailed and having relatively longer and more rectangular wings. Dark morph booted eagles are also grey-brown or cinnamon from below on the tail and have pale wedges on the underside of the primaries.<ref name= Ferguson-Lees/><ref name= Naoroji/><ref name= Brazil/><ref name= Robson/>