The Corvidae family contains the crows, ravens, rooks, jackdaws, jays, magpies, treepies, choughs and nutcrackers. These species are grouped into subfamilies that are outlined in the table that follows. Beware that names such as jays, magpies, or treepies are not always assigned in a consistant manner. For example, the black magpie (Platysmurus leucopterus) belongs to the treepie subfamily.
SUBFAMILY |
MEMBERS |
Corvinae |
True crows of genus Corvus includes the crows, ravens, rooks, jackdaws.
|
Corvinae (continued) |
Jays of genus Garrulus, nutcrackers of Nucifraga, magpies of Pica, ground-jays of Jay Podoces, and the piapiac of Ptilostomus, and Stresemann's bush-crow of Zavattariornis. |
Cissinae |
Green-magpies of Cissa and the blue-magpies of Urocissa. |
Cyanocoracinae |
Most of the species that are named "jay". |
Crypsirininae |
Treepies |
Perisoreinae |
Three jay species of Perisoreus and Magpies of Cyanopica |
Corvids are medium to large in size, with strong feet and bills, and a single moult each year (most passerines moult twice). Most species have bristle-like feathers covering their nostrils. They are omnivores having a varied diet of animal and plant material. Makes average slightly heavier than females. Corvids are found worldwide except for the tip of South America and the polar ice caps.
Subfamily Corvinae - Crows and Allies
Austalian Raven Image by JJ Harrison
This article describes the species in the Corvus genus which contains the crows, jackdaws, ravens and rooks. Tthe Corvinae subfamily also contains genera Garrulus, Nucifraga, Pica, Podoces, Ptilostomus, and Zavattariornis. These genera will be described in a separate article.
Genus Corvus
The genus Corvus consists of relatively large birds that are are either black all over, or mainly black with white or grey patches. In most species, nasal bristles cover the nostrils. They range in size from the relatively small jackdaws to the very large common raven.
The 40 plus members of this genus occur on all continents except South America and Antarctica.
Crows and the other members of Corvus are among the most intelligent of birds. Some even make and use tools to help gather food. They have even learned how to used drinking fountains, adjusting the flow to be appropriate for drinking or bathing. Most crows are social and will gather in large communal roosts numbering. They make a wide variety of calls or vocalization, presumbably conveying different information in different circumstances.
Intelligence and social structures make most crow species adaptable and opportunistic.
Crows are omnivorous. They often seem to eat whatever is available: - plants or animals, dead or alive. They can be a pest getting into garbage bags and fields of grain. The scarecrow exists because farmers for centuries have consider crow as pests. And yes, they do damage to crops, but they also assist by eating insects and thus also prevent crop damage. It usually takes more than just a scarecrow to deter crows, so guns and poison may be resorted to. The crows intelligence usually prevents decimation of a species.
Many of the crow species described here exist because a wide spread species managed to breed on an isolated location such as an island. The offspring sometimes evolved special characteristics that helped them thrive in that location and they eventually became different enough from their ancestors to be considered to be a new species. However, if the new species has a limited range, that could put it in danger of extinction because of a change in its food supply. Also, if humans modified their enviroment, for exampe by logging, that could be deadly too.
Crow,_American Corvus brachyrhynchos Found: North America
Image by: 1) )
Dick - Maine
2, 4) Dick - North Carolina
3)
Mdf - Ontario
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Crow,_Northwestern Corvus brachyrhynchos caurinus
Image by: 1) Alan D Wilson 2) Elaine R Wilson - British
Columbia 3)
Dick Daniels - Seward, Alaska
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Crow,_Banggai Corvus unicolor
Image by: 1)
Jo_Ibo_Lausala
Crow,_Bismarck Corvus insularis
No image available.
Crow,_Bougainville Corvus meeki
No image available.
Crow,_Brown-headed Corvus fuscicapillus
No image available.
Crow,_Cape Corvus capensis
Image by: 1)
Dave_Curtis 2, 3) Derek_Keats - South Africa
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Crow,_Carrion Corvus corone
Image by: 1)
Richard_Bartz 2)
L B Tettenborn - Germany 3)
Andreas_Eichler - Germany
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Crow,_Collared Corvus pectoralis also
Corvus torquatus
Image by:
1, 2) Charles Lam - Hong Kong
3) Frankie_Chu
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Crow,_Cuban Corvus nasicus
Image by: 1)
Jerry_Oldenettel 2)
Francesco_Veronesi 3)
Dave_Wendelken
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Crow,_Fish Corvus ossifragus
Image by: 1)
Phil Brown - Massachusetts 2)
e monk - North Carolina 3)
Don_Faulkner - South Carolina 4)
Peterwchen - Cape May, NJ
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Crow,_Flores Corvus florensis
Image by: 1)
Ron Knight
Crow,_grey Corvus tristis
Image by:
1)
Jerry Oldenettel - Papua New Guinea
Crow,_Hawaiian Corvus hawaiiensis
Image by: 1)
USFWS
Crow,_Hooded Corvus cornix
Image by: 1)
Dick Daniels - Scotland
2) Charlie Westerinen - Poland 3)
Andreas_Trepte 4)
Lip Kee - Egypt
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Crow,_House Corvus splendens
Image by: 1)
Benjamint444 - Nepal 2)
Darren
Bellerby -
India 3)
Anton_Croos - Sri Llanka
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Crow,_Jamaican Corvus jamaicensis
Image by: 1)
Philip Gosse 2)
Ron Knight
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Crow,_Large-billed Corvus macrorhynchos
Image by: 1)
Allan Hopkins- India 2)
Sergey Yeliseev 3)
Francisco_Restivo - Toyko
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Crow,_Little Corvus bennetti
Image by: 1)
Keith Edkins 2) Ron_n_Beth_Pixs
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Crow,_Long-billed Corvus validus
Image by: 1)
Paulo Alves
Crow,_Mariana Corvus kubaryi
Image by: 1)
USGS
Crow,_New Caldonian Corvus moneduloides
Image by: 1)
Natalie Uomini 2)
Natalie Uomini 3)
jean-paul_beaudeau
1) Juvenile
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Crow,_Palm Corvus palmarum
Image by:
1) Black Crow 2, 3) Jerry Oldenettel - Cuba
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Crow,_Pied Corvus albus
Image by: 1)
Frank_Vassen - Namiba 2)
Dick - Madagascar
3, 4) Dick - Tanzania
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Crow,_Piping Corvus typicus
Image by:
1)
Black Crow 2)
Francesco Veronesi
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Crow,_Sinaloa Corvus sinaloae
Image by: 1)
Dominic Sherony 2)
Jorge_Montejo
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Crow,_Slender-billed Corvus enca
1Image by:
1)
Black Crow 2)
AS Kono - North Sulawesi 3)
David_Meade - Sulawesi 4)
Ariefrahman - Sulawesi
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Crow,_Somali Corvus edithae
Image by:
1,
2) Sergey Yeliseev - Ethiopia 3)
Nik_Borrow - Ethiopia
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Crow,_Tamaulipas Corvus imparatus
Image by:
1) Steve nova 2)
Jerry Oldenettel - Texas 3)
Howard_Patterson - Texas
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Crow,_Torresian Corvus orru
Image by: 1)
Richard McDonald 2)
Lip Kee - Northern Territory 3)
Dave Curtis - Brisbane 4) Charlie Westerinen - Nossa Heads, Australia
1) Bird on left has white visible on its neck.
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Crow,_White-billed Corvus woodfordi
Image by: 1)
William Hart
Crow,_White-necked Corvus leucognaphalus
Image by: 1)
ZankaM - Dominican Republic
2, 3) Ron Knight - Dominican Republic
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Jackdaw, Daurian Corvus dauuricus
Image by:
1)
Dave_Curtis - Sichuan China 2)
Sergey Yeliseev 3)
Hiyashi_Halso known as
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Jackdaw, Eurasian Corvus monedula
Image by: 1)
Placid Casual 2) MatthiasKabel 3)
Dick Daniels - Scotland 4)
Agustin_Povedano
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RAVENS
The ravens ares larger-bodied members of the genus Corvus. Most have black plumage and large beaks but their plumage can differ slightly in some species. Most species have dark brown irises but a few in Australia have white irises.
Raven,_Australian Corvus coronoides Found: Australia
Image by: 1)
Jean_and_Fred - Perth
2) Dick Daniels - Australia 3)
Brett_Donald
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Raven,_Brown-necked Corvus ruficollis
Image by: 1)
Francesco_Veronesi - Morocco
2, 3) Yip Kee - Egypt 4)
Marcel Holyoak
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Raven,_Chihuahuan Corvus cryptoleucus
Image by:1)
Tony_Morris 2, 3) Quinn Dombrowski - Arizona 4)
Jerry Oldenettel - Arizona
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Raven,_Common Corvus corax
Image by: 1)
Dick Daniels - Arizona
2) Dick - Wyoming 3) Dick - Napel 4)
Jan_Svetlik
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Raven,_Fan-tailed Corvus rhipidurus
Image by: 1)
Francesco_Veronesi - Kenya 2)
Charles_J_Sharp - Ethiopia 3) Lip_Kee - Ethiopia
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Raven,_Forest Corvus tasmanicus
Image by: 1)
JJ Harrison 2)
Ron Knight 3)
Nik_Borrow - Tasmania
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Raven,_Little Corvus mellori
Image by: 1)
Toby Hudson 2)
David Jenkins 3)
Kym_Farnik
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Raven,_Thick-billed Corvus crassirostris
Image by: 1)
Ondrej Zvacek 2)
Donald_Macauley - Ethiopia 3) Lip_Key
1) Pair
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Raven,_White-necked Corvus albicollis
Image by: 1)
Masa_Salso known asno - Tanzania 2)
Greg Hume - Cincinnati Zoo 3)
David
Schenfeld - Rwanda 4)
Cristiano Crolle - South Africa
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Rook Corvus frugilegus
Image by: 1)
Dick - Scotland 2)
Dick - Scotland 3)
Jan_Svetlik
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