THE WORLD BIRDS - An Online Bird Book
RAPTORS - Kites
Raptors are birds of prey. They are carnivorous, long lived, and have low reproductive rates. They catch their prey via strong claws – three pointing forward and one pointing backward. The raptors that hunt by day are: hawks, eagle, kites, vultures, falcons. Owls hunt by night. The raptors are spread over a number of orders: Accipitriformes (hawks and allies), Cathartiformes (New World vultures), Falconiformes (falcons), Strigiformes (owls).
Unlike most other birds, or mammals for that matter, almost all female raptors are larger than their male counterpart. There is no consensus as why evolution worked this way for the raptor. The theory I like best is that the bigger female can defend the nest better, while the smaller male is more agile and can find lots of little prey to bring home to the nest. That is, when the chicks are young, they need lots of little tidbits, not one humungous carcass. A side benefit of having male and female being different in size is that they tend to go after different food sources so that way they are not competing with each other for food. But if males were the bigger ones, that diversity benefit would also be true. So perhaps the overarching reason, is the male bringing home lots of tidbits.
Raptors, especially those that stalk prey from the air, tend to have dark upperparts and lighter underparts. Looking down from above a raptor, the dark upperparts tend to blend in with the ground. While looking from below, the light underparts blend better with the sky.
Many of the raptors have their conservation status listed as something other than Least Concern; that is, there is some concern about their survival. A contributing factor is that raptors need a considerable area to offer them sufficient prey. As habitats degrade, they have less area to patrol, and less prey in the remaining areas, a double whammy. Also, for millennia, raptors have been at the top of the food chain and did not need to worry about their longterm survival. As a result, they have evolved to have few offspring, sometimes only 1. Thus if a population decreases, it is hard for it to recover.
Accipitriformes
The order Accipitriformes is made of of three families: Accipitridae, Pandionidae, and Sagittariidae. Accipitridae contains the
hawks,
eagles,
kites,
Old World vultures.
Pandionidae only contains one species - the osprey, and
Sagittariidae only contains the secretary bird.
Accipitridae
Accipitrine raptors generally have broad wings with rounded ends. As indicated below, the family is divided into 9 subfamilies. The characteristics of each of the subfamilies will be given prior to a description for each of their species. A confusing factor for presenting the subfamilies is that common terms such as eagles or kites do not correspond to a specific subfamily. For example, eagles belong to two different subfamilies and kites to 5 subfamilies!
The Accipitridae family has the following subfamiles:
Aquilinae – booted eagles
Circaetinae – serpent eagles
Harpiinae – forest eagles
Accipitrinae – accipitrine hawks
Buteoninae – buteonine hawks
Harpaginae – harpagine hawks
Melieraxinae – melieraxine hawks
Elaninae – elanine kites
Perninae – honey-buzzards
Gypaetinae – gypaetine vultures and harrier-hawks
Gypinae – Old World vultures
Kites
Swallow-tailed Kite kite Image by wdrwilson
The name "kite" when used to name a bird species generally implies that the species spends some time soaring like a kite. All the kites are raptors and belong to the family Accipitridae. They come from the following subfamiles: Buteoninae, Elaninae, Harpaginae, and Perninae. Kites aer also in tribe Milvini which such some consider to belong to subfamily Buteoninae of the buteonine hawks. Others consider elevating the tribe to a family called Milvinae.
Kites are spread over many subfamilies instead of one over-arching subfamily because, other than being able to soar, there is no agreed upon set of characteristic to describe the group. Rather, what is a called kite is often in eyes of the namer. But the lack of uniformity for "kites" is not unusual. An other example is the term "hawk". Hawks come from the subfamilies: Accipitrinae, Buteoninae, Harpaginae, and Melieraxinae.
The following table lists the various species that are called kites, givs their subfamily, and the continent(s) where it is found.
Scientific Name |
Common Name |
Subfamily/Tribe |
NA |
SA |
EU |
AS |
AF |
AU |
Chelictinia riocourii |
Scissor-tailed kite |
Elaninae |
|
|
|
|
AF |
|
Chondrohierax uncinatus |
Hook-billed Kite |
Perninae |
NA |
SA |
|
|
|
|
Elanoides forficatus |
Swallow-tailed Kite |
Perninae |
NA |
SA |
|
|
|
|
Elanus axillaris |
Australian Kite |
Elaninae |
|
|
|
|
|
AU |
Elanus caeruleus |
Black-winged Kite |
Elaninae |
|
|
EU |
AS |
AF |
|
Elanus leucurus |
White-tailed Kite |
Elaninae |
NA |
SA |
|
|
|
|
Elanus scriptus |
Letter-winged Kite |
Elaninae |
|
|
|
|
|
AU |
Gampsonyx swainsonii |
Pearl Kite |
Elaninae |
|
SA |
|
|
|
|
Haliastur indus |
Brahminy Kite |
Milvini |
|
|
|
AS |
|
AU |
Haliastur sphenurus |
Whistling Kite |
Milvini |
|
|
|
|
|
AU |
Hamirostra melanosternon |
Black-breasted Kite |
Perninae |
|
|
|
|
|
AU |
Harpagus bidentatus |
Double-toothed Kite |
Harpaginae |
|
SA |
|
|
|
|
Harpagus diodon |
Rufous-thighed Kite |
Harpaginae |
|
SA |
|
|
|
|
Helicolestes hamatus |
Slender-billed Kite |
Buteoninae |
|
SA |
|
|
|
|
Ictinia mississippiensis |
Mississippi Kite |
Buteoninae |
NA |
SA |
|
|
|
|
Ictinia plumbea |
Plumbeous Kite |
Buteoninae |
|
SA |
|
|
|
|
Leptodon cayanensis |
Grey-headed Kite |
Perninae |
|
SA |
|
|
|
|
Leptodon forbesi |
White-collared Kite |
Perninae |
|
SA |
|
|
|
|
Lophoictinia isura |
Square-tailed Kite |
Perninae |
|
|
|
|
|
AU |
Milvus aegyptius |
Yellow-billed Kite |
Milvini |
|
|
|
|
AF |
|
Milvus migrans |
Black Kite |
Milvini |
|
|
EU |
AS |
AF |
|
Rostrhamus sociabilis |
Snail Kite |
Buteoninae |
NA |
SA |
|
|
|
|
Elaninae – elanine kites
The kites of the Elaninae subfamily are sometimes refered to as the "white-tailed" kites. Most of them are graceful in flight and pleasing to look at. They nest in trees, laying 2 to 5 white eggs with dark mottling.
The subfamily contains 6 kite species and 4 of those are in genus Elanus. The Elanus kites are small raptors, all are less than 450 grams. They have mainly white and grey plumage and have black wing marking. They search for prey from a low and slow flight, or while hovering. These kites have large heads, a short neck, and a short and square tail. The scissor-tailed kite,
Chelictinia riocourii, is a small grey and white kite that has a deeply forked tail and hunts mainly whiile soaring or hovering. The pearl kite,
Gampsonyx swainsonii, is the smallest raptor in the Americas. It is mainly black and white and hunts from a perch.
Genus Chelictinia - 1 species
Kite,_Scissor-tailed Chelictinia riocourii
Image by: 1) Dick Daniels - Tanzania 2)
BioDiv Library 3)
Nik_Borrow - Senegal 4)
Ron_Knight - Cameroon
1) Juvenile
Genus Elanus
These are small raptors, all are less than 450 grams. They have mainly white and grey plumage and have black wing marking. They search for prey from a low and slow flight, or while hovering. These kites have large heads, a short neck, and a short and square tail.
Kite,_Black-winged Elanus caeruleus
Image by: 1)
Thomas_Schoch - Namibia
2) Dick Daniels -
Radical Raptors, South Africa
3) Dick - Nairobi National Park, Kenya 4)
JM Garg - India
1) Juvenile
|
Kite,_Australian Elanus axillaris
Image by: 1)
David
Cook - South Australia 2)
Patrick_K59 - Australia
Wayne Butterworth - Australia
David Jenkins - Australia
Kite,_Letter-winged Elanus scriptus
Image by: 1) Frank_Pierce
2,
3) Nik_Borrow 4)
Ron Knight - Australia
Kite,_White-tailed Elanus leucurus
Image by:
1, 2) Maggie Smith - California 3)
Gerardo Santos - Mexico 4)
Tom Clifton - California
1) Juvenile
Genus Gampsonyx - 1 species
Kite,_Pearl Gampsonyx swainsonii
Image by: 1)
Barloventomagico - Venezuela 2)
Dave_Curtis - Guyana 3)
Tony_Castro - Ecuador
Perninae: Bazas, Honey-buzzards, and Kites
Genus Aviceda
The bazas, also known as cuckoo-hawks, all have a crest on the head. They are distributed from Australia to southern Asia and across to Africa.
Baza,_African Aviceda cuculoides
Image by:
1, 2) Steve_Garvie 3)
Peter_Steward - Malawi 4)
Dave_Curtis - Ghana
Baza, Black Aviceda leuphotes
Image by: 1)
Johnny Wee 2, 3) Vijay Ismavel - Assam, India 4)
DChai21 - Singapore
Baza, Jerdon's Aviceda jerdoni
Image by:
1, 2) Bernard Dupont - Malaysia 3)
Saud Faisal
Baza, Pacific Aviceda subcristata
Image by: 1)
Aviceda - SE Queensland, Austalia 2)
Stephan Barnett 3) Adrian Wiggins 4)
Lip
Kee Yap - Wulagi, Darwin, NT, AU
3) Stuffed
Cuckoo-Hawk, Madagascar Aviceda madagascariensis
Image by: 1)
John Gerrard Keulemans
Genus Chondrohierax - 1 species
Kite,_Hook-billed Chondrohierax uncinatus
Image by:
1) Cláudio Dias Timm - Brazil 2)
Alejandro_Bayer_Tamayo - Columbia 3) Nick Athanas - Ecuador 4)
David Cook - Peru
1, 2) Female 3, 4) Male
Genus Elanoides - 1 species
Kite,_Swallow-tailed Elanoides forficatus
Image by: 1)
Joe Nicholson -
Florida 2)
Lauren Anderson -
Avian Reconditioning Center, Florida 3)
Amy Evenstad 4)
Dick Daniels - Ash, North Carolina
Genus Eutriorchis - 1 species
All of the other species that are known a serpent-eagles or snake-eagles are placed in the eagle subfamily
Circaetinae. The Madagascar serpent-eagle is placed here in Perninae subfamily of honey-buzzards.
For other serpent-eagles, see
Spilornis and
Dryotriorchis.
Eagle,_Madagascar Serpent- Eutriorchis astur
Image by:
John Gerrard Keulemans
Genus Hamirostra - 1 species
Kite,_Black-breasted Hamirostra melanosternon
Image by:
1, 2) Benjamint444b -
Annapurna region of Nepal 3)
Lip Kee - Northern Territory
Genus Leptodon
These two spcies have a grey head, black upperparts and white underparts.
Kite,_Gray-headed Leptodon cayanensis
Image by: 1)
Victor Burolla - Costa Rica 2)
Claudi Timm 3)
Jerry OIdenettel - Venezuela
Kite,_White-collared Leptodon forbesi
Image by: 1)
Yuri_Raia
Genus Lophoictinia - 1 species
Kite,_Square-tailed Lophoictinia isura
Image by: 1) Patrick_K59 2)
Graham_Winterflood 3, 4) Laurie_Boyle
Genus Pernis
The Honey-Buzzards breed in temperate regions of the Old World. They feed on bee / wasp larvae, as well as the bees themselves and their honey.
Buzzard,_Barred_Honey- Pernis celebensis
Image by: 1)
Francesco_Veronesi
Buzzard,_European Honey- Pernis apivorus
Image by: 1)
Bernard_Dupont 2)
Jo
Mur - Zambia 3)
Jan_Svetlik 4 ) Cristiano Crolle - Italy
Buzzard,_Oriental Honey- Pernis ptilorhynchus
Image by: 1)
J M Garg 2)
Koshy Koshy - India 3)
Hiyashi Haka - Taiwan 4)
Umang Dutt - India 5)
Sergey Yeliseev - India