Haliastur is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of medium-sized diurnal

Diurnal animal

Diurnality is a plant or animal behavior characterized by activity during the day and sleeping at night.-In animals:Animals that are not diurnal might be nocturnal or crepuscular . Many animal species are diurnal, including many mammals, insects, reptiles and birds...

 birds of prey

Bird of prey

Birds of prey are birds that hunt for food primarily on the wing, using their keen senses, especially vision. They are defined as birds that primarily hunt vertebrates, including other birds. Their talons and beaks tend to be relatively large, powerful and adapted for tearing and/or piercing flesh....

. It consists of two species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of kite

Kite (bird)

Kites are raptors with long wings and weak legs which spend a great deal of time soaring. Most feed mainly on carrion but some take various amounts of live prey.They are birds of prey which, along with hawks and eagles, are from the family Accipitridae....

 which form part of the subfamily Milvinae; some authorities place these species in the genus Milvus

Milvus

Milvus is a genus of medium-sized birds of prey. It is an Old World group consisting of three kites which form part of the subfamily Milvinae...

, despite clear differences in behaviour, voice

Bird song

Bird vocalization includes both bird calls and bird songs. In non-technical use, bird songs are the bird sounds that are melodious to the human ear. In ornithology and birding, songs are distinguished by function from calls.-Definition:The distinction between songs and calls is based upon...

 and plumage

Plumage

Plumage refers both to the layer of feathers that cover a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage vary between species and subspecies and can also vary between different age classes, sexes, and season. Within species there can also be a...

.

Species list

Both of the species found in this genus are large for kites; both are relatively small-headed and have rounded tail tips.

• Brahminy Kite
  Brahminy Kite
  The Brahminy Kite , also known as the Red-backed Sea-eagle, is a medium-sized bird of prey in the family Accipitridae, which also includes many other diurnal raptors such as eagles, buzzards and harriers. They are found in the Indian subcontinent, Southeast Asia and Australia...
  
  , Haliastur indus
• Whistling Kite
  Whistling Kite
  The Whistling Kite is a medium-sized diurnal raptor found throughout Australia , New Caledonia and much of New Guinea . Also called the Whistling Eagle or Whistling Hawk, it is named for its loud whistling call, which it often gives in flight...
  
  , Haliastur sphenurus