Information about Grey Crow
| Grey Crow | ||||||||||||||
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| Conservation status | ||||||||||||||
| Scientific classification | ||||||||||||||
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| Binomial name | ||||||||||||||
| Corvus tristis Lesson & Garnot, 1827 | ||||||||||||||
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The tail feathers are relatively long and graduated and the legs are relatively short. The overall colouring of the adult bird is black with randomly bleached wing and tail feathers. A large region around the eye is quite bare of feathering and shows pinkish-white skin with the eyes a bluish-white. The bill is unusual too in being very variable, bluish on upper mandible and pinkish-white on the lower in some specimens, while on others the whole bill is pinkish white with a darker tip. The forward pointing nasal bristles so often prominent in other Corvus species are very reduced also.
The juvenile bird by comparison has remarkably pale plumage being light brown to cream, the wings, tail and primaries showing blackish-brown and fawn and the head and underparts often almost white.
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Distribution map
The species occours all over the huge island of New Guinea and associated offshore islands in both primary and secondary forest in both lowland and hill forest up to 1350 m.
Feeding is both on the ground and in trees taking a very wide range of items. Fruit seems to be very important making up a large percentage of the intake though small animals such as frogs and aquatic insect larvae are taken from shallow water on sand or shingle beds in rivers etc. When foraging through the trees the birds keep loose, noisy contact with each other and usually number between 4-8 individuals.
The voice is described as a weak sounding 'ka' or a whining 'caw' with other hoarse sounding notes added when excited.
References
- BirdLife International (2004). Corvus tristis. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 09 May 2006. Database entry includes justification for why this species is of least concern
conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. Many factors are taken into account when assessing the conservation status of a species: not simply the number remaining, but the
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Least Concern (LC) is an IUCN category assigned to extant species or lower taxa which have been evaluated but do not qualify for any other category. As such they do not qualify as threatened, nor Near Threatened, nor (prior to 2001) Conservation Dependent.
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Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. Scientific classification also can be called scientific taxonomy, but should be distinguished from folk taxonomy, which lacks scientific basis.
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Chordata
Bateson, 1885
Typical Classes
See below
Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates.
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Bateson, 1885
Typical Classes
See below
Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates.
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Aves
Linnaeus, 1758
Orders
About two dozen - see section below
Birds (class Aves) are bipedal, warm-blooded, egg-laying vertebrate animals.
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Linnaeus, 1758
Orders
About two dozen - see section below
Birds (class Aves) are bipedal, warm-blooded, egg-laying vertebrate animals.
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Passeriformes
Linnaeus, 1758
Suborders
A passerine is a bird of the giant order Passeriformes. More than half of all species of bird are passerines.
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Linnaeus, 1758
Suborders
- Acanthisitti
- Tyranni
- Passeri
A passerine is a bird of the giant order Passeriformes. More than half of all species of bird are passerines.
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Corvidae
Vigors, 1825
Genera
many, see article text
Corvidae is a family of oscine passerine birds that contains the crows, ravens, rooks, jackdaws, jays, magpies, treepies and nutcrackers (Clayton and Emery 2005, [1] ).
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Vigors, 1825
Genera
many, see article text
Corvidae is a family of oscine passerine birds that contains the crows, ravens, rooks, jackdaws, jays, magpies, treepies and nutcrackers (Clayton and Emery 2005, [1] ).
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Corvus
Linnaeus, 1758
Species
See text.
The true crows are large passerine birds that comprise the genus Corvus. Ranging in size from the relatively small pigeon-sized jackdaws (Eurasian and Daurian) to the Common Raven of the
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Linnaeus, 1758
Species
See text.
The true crows are large passerine birds that comprise the genus Corvus. Ranging in size from the relatively small pigeon-sized jackdaws (Eurasian and Daurian) to the Common Raven of the
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binomial nomenclature is the formal system of naming species. The system is also called binominal nomenclature (particularly in zoological circles), binary nomenclature (particularly in botanical circles), or the binomial classification system.
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René Primevère Lesson (March 20, 1794 - April 28, 1849) was a French surgeon and naturalist.
Lesson was born at Rochefort, and at the age of sixteen he entered the Naval Medical School there.
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Lesson was born at Rochefort, and at the age of sixteen he entered the Naval Medical School there.
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Prosper Garnot (January 13, 1794 - 1838) was a French surgeon and naturalist.
Garnot was born at Brest. He was an assistant surgeon under Louis Isidore Duperrey on La Coquille during its circumnavigation of the globe (1822-25).
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Garnot was born at Brest. He was an assistant surgeon under Louis Isidore Duperrey on La Coquille during its circumnavigation of the globe (1822-25).
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Eurasia is an immense landmass covering about 53,990,000 km² (or about 10.6%) of the Earth's surface. Often reckoned as a single continent, Eurasia comprises the traditional continents of Europe and Asia, concepts which date back to classical antiquity and the borders for which are
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C. corone
Binomial name
Corvus corone
Linnaeus, 1758
The Carrion Crow (Corvus corone
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Binomial name
Corvus corone
Linnaeus, 1758
Carrion Crow range
The Carrion Crow (Corvus corone
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Feathers are one of the epidermal growths that form the distinctive outer covering, or plumage, on birds. They are the outstanding characteristic that distinguishes the Class Aves from all other living groups. Other Theropoda also had feathers (see Feathered dinosaurs).
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mandible (from Latin mandibūla, "jawbone") or inferior maxillary bone is, together with the maxilla, the largest and strongest bone of the face . It forms the lower jaw and holds the lower teeth in place.
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species is one of the basic units of biological classification. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring.
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island (IPA: /aɪ.lɪnd/) or isle (IPA: /aɪ.ʌl
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New Guinea<nowiki />
Political division of New Guinea
Geography
<nowiki/>
Location Island north of Australian continent
Coordinates
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Political division of New Guinea
Geography
<nowiki/>
Location Island north of Australian continent
Coordinates
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FOREST (an acronym for "Freedom Organisation for the Right to Enjoy Smoking Tobacco") is a United Kingdom political pressure group that campaigns for the right of people to smoke tobacco and opposes attempts to ban or reduce tobacco consumption.
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tree is a perennial woody plant. It is sometimes defined as a woody plant that attains diameter of 10 cm (30 cm girth) or more at breast height (130 cm above ground).
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fruit has different meanings depending on context. In botany, a fruit is the ripened ovary—together with seeds—of a flowering plant. In many species, the fruit incorporates the ripened ovary and surrounding tissues.
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FROG
General
Dianelos Georgoudis, Damian Leroux, and Billy Simón Chaves
1998
Cipher detail
Key size(s):| 128, 192, or 256 bits
Block size(s):| 128 bits
8
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General
Dianelos Georgoudis, Damian Leroux, and Billy Simón Chaves
1998
Cipher detail
Key size(s):| 128, 192, or 256 bits
Block size(s):| 128 bits
8
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Insecta
Linnaeus, 1758
Orders
Subclass Apterygota
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Linnaeus, 1758
Orders
Subclass Apterygota
- * Archaeognatha (bristletails)
- * Thysanura (silverfish)
- * Infraclass Paleoptera (Probably paraphyletic)
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larvae or lemures (singular lemur) were the spectres or spirits of the dead; they were the malignant version of the lares. Some Roman writers describe lemures
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Aves
Linnaeus, 1758
Orders
About two dozen - see section below
Birds (class Aves) are bipedal, warm-blooded, egg-laying vertebrate animals.
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Linnaeus, 1758
Orders
About two dozen - see section below
Birds (class Aves) are bipedal, warm-blooded, egg-laying vertebrate animals.
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note has two primary meanings: 1) a sign used in music to represent the relative duration and pitch of a sound; and 2) a pitched sound itself. Notes are the "atoms" of much Western music: discretizations of musical phenomena that facilitate performance, comprehension, and analysis
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IUCN Red List of Threatened Species (also known as the IUCN Red List or Red Data List), created in 1963, is the world's most comprehensive inventory of the global conservation status of plant and animal species.
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IUCN
International Organization
Founded October 1948, Fontainebleau, France
Headquarters Rue Mauverney 28, 1196 Gland, Switzerland
Key people Mr Valli Moosa
Ms Julia Marton-Lefèvre
Industry Natural resource conservation
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International Organization
Founded October 1948, Fontainebleau, France
Headquarters Rue Mauverney 28, 1196 Gland, Switzerland
Key people Mr Valli Moosa
Ms Julia Marton-Lefèvre
Industry Natural resource conservation
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