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The Blue Jay (Cyanocitta cristata) is a passerine bird and member of the crow family Corvidae native to North America. It is adaptable, aggressive and omnivorous. The term Blue Jay can refer to: Blue Jay, a species of bird. ...
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The 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. ...
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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. ...
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For other uses, see Animal (disambiguation). ...
Typical Classes See below Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates. ...
For other uses, see Bird (disambiguation). ...
Families Many, see text A passerine is a bird of the giant order Passeriformes. ...
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]). Collectively its members are called corvids and there are over 120 species. ...
Genus Cyanocitta The genus Cyanocitta is a New World genus of jays, passerine birds of the family Corvidae. ...
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Carl Linnaeus, Latinized as Carolus Linnaeus, also known after his ennoblement as , (May 13, 1707[1] – January 10, 1778), was a Swedish botanist, physician and zoologist[2] who laid the foundations for the modern scheme of nomenclature. ...
Year 1758 (MDCCLVIII) was a common year starting on Sunday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Thursday of the 11-day slower Julian calendar). ...
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Families Many, see text A passerine is a bird of the giant order Passeriformes. ...
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]). Collectively its members are called corvids and there are over 120 species. ...
North America North America is a continent[1] in the Earths northern hemisphere and (chiefly) western hemisphere. ...
Omnivores are organisms that consume both plants and animals. ...
Description
The Blue Jay measures about 30 cm from bill to tail and weighs 70–100 g (2.47-3.53 ounces), with a wingspan of 34–43 cm (13–17 in).[1] Its plumage is lavender-blue to mid-blue in the crest, back, wings, and tail, and its face is white. The underside is off-white and the neck is collared with black which extends to the sides of the head. The wing primaries and tail are strongly barred with black, sky-blue and white. [2] The bill, legs, and eyes are all black. Males and females are nearly identical; males are slightly larger.[3] There is a pronounced crest on the head, a crown of feathers, which may be raised or lowered according to the bird’s mood. When excited or aggressive, the crest may be fully raised. When frightened, the crest bristles outwards, brushlike. When the bird is feeding among other jays or resting, the crest is flattened to the head.[4] Image File history File links Size of this preview: 800 × 600 pixelsFull resolution (1600 × 1200 pixel, file size: 1. ...
Image File history File links Size of this preview: 800 × 600 pixelsFull resolution (1600 × 1200 pixel, file size: 1. ...
As with other blue-hued birds, the Blue Jay's coloration is not derived by pigments, but is the result of light refraction due to the internal structure of the feathers; if a Blue Birdfeather is crushed, the blue disappears as the structure is destroyed. This is referred to as structural coloration. Natural Ultramarine pigment in powdered form. ...
The straw seems to be broken, due to refraction of light as it emerges into the air. ...
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Blue jays can be aggressive towards other birds, and are known to approach humans confidently.
Distribution and habitat The Blue Jay occurs from southern Canada south to Texas and Florida. It breeds in mixed-wood forests, deciduous forests, parks, and residential areas from Canada in the north, through eastern North America, and south to Florida and northeastern Texas. The western edge of the range stops where the arid pine forest and scrub habitat of the closely related Steller's Jay begins. Recently, the range of the Blue Jay has extended to the Northwest so that it is now a regular but still-rare autumn migrant along the northern Pacific Coast.[1] Binomial name (Gmelin, 1788) Stellers Jay range The Stellers Jay (Cyanocitta stelleri) is a jay native to western North America, closely related to the Blue Jay found in the rest of the continent, but with a black head and upper body. ...
The Blue Jay is partially migratory. It may withdraw several hundred kilometres south in the northernmost parts of its range. It migrates during the daytime, in loose flocks of 5 to 250 birds.[2] The Blue Jay occupies a variety of habitats within its large range, from the pine woods of Florida to the spruce fir forests of northern Ontario. It is less abundant in the heavier forests, preferring mixed woodlands with oaks and beeches.[4]
Behaviour The Blue Jay is generally aggressive toward other birds and it will chase birds from feeders or other food sources. It may chase birds of prey, such as hawks and owls, which occasionally prey on jays, and will scream if it sees a predator within its territory. It may also be aggressive towards humans who come close to its nest, and if an owl roosts near the nest during the daytime, the Blue Jay attacks it until it takes a new roost. The Blue jay is a slow flier and an easy prey for hawks and owls, when it flies in open lands. It flies with body and tail held level, with slow wing beats.[5]
The Blue Jay is known to be a raider of other bird's nests. It may steal eggs, chicks, and nests. It appropriates American Robin nests. Young jays collect brightly coloured or reflective objects, such as bottle caps or pieces of aluminium foil, and carry them for a moment.[5] Binomial name Linnaeus, 1766 The American Robin (Turdus migratorius) is a migratory songbird of the thrush family. ...
Blue Jays in captivity have been observed using strips of newspaper as tools to obtain food.[6] Download high resolution version (1200x1200, 703 KB) Wikipedia does not have an article with this exact name. ...
Download high resolution version (1200x1200, 703 KB) Wikipedia does not have an article with this exact name. ...
Vocalization The voice is typical of most jays in being varied, but the most commonly recognized sound is the alarm call, which is a loud, almost gull-like scream. There is also a high-pitched jayer-jayer call that increases in speed as the bird becomes more agitated. Blue Jays will use these calls to band together to drive a predator such as a hawk away from their nest. “Seagull†redirects here. ...
Genera Accipiter Micronisus Melierax Urotriorchis Erythrotriorchis The term hawk refers to birds of prey in any of three senses: Strictly, to mean any of the species in the bird sub-family Accipitrinae in the genera Accipiter, Micronisus, Melierax, Urotriorchis, and Megatriorchis. ...
Blue Jays also have quiet, almost subliminal calls which they use among themselves in proximity. One of the most distinctive calls of this type is often referred to as the "rusty pump" owing to its squeaky resemblance to the sound of an old hand-operated water pump. In fact, they can make a large variety of sounds, and individuals may vary perceptibly in their calling style. Like other corvids, blue jays may learn to mimic human speech. [1] Genera Platylophus Gymnorhinus Cyanocitta Aphelocoma Cyanocorax Garrulus Cissa Perisoreus Urocissa Cyanopica Dendrocitta Crypsirina Pica Zavattariornis Podoces Nucifraga Pyrrhocorax Ptilostomus Corvus The crow family (Corvidae) has members that are above average in size for the bird order Passeriformes; in fact, it includes several that are among the largest. ...
Reproduction The breeding season begins in mid-March, peaks in mid-April to May, and extends into July. Any suitable tree or large bush may be used for nesting, though an evergreen is preferred, and the nest is built at a height of 3 to 10 m.The adults build a cup-shaped nest of twigs, small roots, bark strips, moss, other plant material, cloth, paper, and feathers, with occasional mud added to the cup.[7]
Both sexes build the nest and rear the young, though only the female broods them. The male feeds the female while she is brooding the eggs. There are usually 4–5 eggs laid and incubated over 16–18 days. The young are fledged usually between 17–21 days. Blue Jays typically form monogamous pair bonds for life.[5] After the juveniles fledge, the family travels and forages together until early fall.[7] The word incubate in the context of birds refers to the development of the chick (embryo) within the egg and the constant temperature required for the development of it over a specific period. ...
Faithfulness redirects here. ...
References Wikimedia Commons has media related to: - ^ a b Blue Jay, Cyanocitta cristata (English). Cornell Lab of Ornithology. Retrieved on 29 May, 2007.
- ^ a b Blue Jay, Cyanocitta cristata (English). USGS. Retrieved on June 18, 2007.
- ^ Frysinger, J.. Blue Jay, Cyanocitta cristata (English). Animal Diversity Web. Retrieved on June 18, 2007.
- ^ a b Robert W. Nero. Blue Jay, Cyanocitta cristata (English). Retrieved on 29 May, 2007.
- ^ a b c Blue Jay. Oiseaux.net. Retrieved on June 10, 2007.
- ^ Thony B. Jones and Alan C. Kamil. Tool-Making and Tool-Using in the Northern Blue Jay. Science, 8 June 1973: Vol. 180. no. 4090, pp. 1076–1078.
- ^ a b Blue Jay, Cyanocitta cristata (English). The Georgia Museum of Natural History. Retrieved on June 18, 2007.
- BirdLife International (2004). Cyanocitta cristata. 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
- Goodwin, D. 1976. Crows of the World. Seattle, University of Washington Press.
- Madge, S. and H. Burn. 1994. Crows and Jays: A Guide to the Crows, Jays and Magpies of the World. Boston, Houghton Mifflin.
- Tarvin, K. A., and G. E. Woolfenden. 1999. Blue Jay (Cyanocitta cristata). In The Birds of North America. No. 469.
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is the 149th day of the year (150th in leap years) in the Gregorian calendar. ...
Science is the journal of the American Association for the Advancement of Science (AAAS). ...
The IUCN Red List of Threatened Species (also known as the IUCN Red List and Red Data List), created in 1963, is the worlds most comprehensive inventory of the global conservation status of plant and animal species and can be found here. ...
The World Conservation Union or International Union for the Conservation of Nature and Natural Resources (IUCN) is an international organization dedicated to natural resource conservation. ...
External links
Gallery Ontario, Canada Image File history File links Metadata Size of this preview: 800 × 533 pixelsFull resolution (3000 × 2000 pixel, file size: 1. ...
| A Blue Jay surveys its surroundings. Image File history File linksMetadata Download high-resolution version (1000x667, 337 KB) Shot in Minnesota. ...
| Leucistic Blue Jay Image File history File links No higher resolution available. ...
| At the National Aviary Image File history File links Size of this preview: 800 × 564 pixelsFull resolution (2424 × 1708 pixel, file size: 3. ...
The National Aviary is Americas only independent indoor nonprofit aviary (that is, abird zoo). ...
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