(id expanded, taxonomy, references) |
(Imp sizes. Clearer flight image. Links. References updated) |
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| − | [[Image: | + | [[Image:Jay-Pinyon-NM-DSCN9178 copy 2.jpg|thumb|550px|right|Photo by {{user|Brian+Hubbs|Brian Hubbs}} <br />Capulin Volcano, [[New Mexico]], May 2017]] |
;[[: Category:Gymnorhinus|Gymnorhinus]] cyanocephalus | ;[[: Category:Gymnorhinus|Gymnorhinus]] cyanocephalus | ||
==Identification== | ==Identification== | ||
| − | 26-29cm. A dull blue jay with a long and sharply pointed bill and a short tail. | + | 26-29cm (10¼-11½ in). A dull blue jay with a long and sharply pointed bill and a short tail. |
* Dusty blue above | * Dusty blue above | ||
* Brighter blue on head | * Brighter blue on head | ||
| − | * Greyer flight feathers and black inner webs of primaries | + | * Greyer flight feathers and black inner webs of [[Topography#Wings|primaries]] |
* Whitish chin and throat | * Whitish chin and throat | ||
* Underparts like upperparts or slightly paler | * Underparts like upperparts or slightly paler | ||
| Line 11: | Line 11: | ||
* Dark brown eye | * Dark brown eye | ||
Females are similar but smaller and with a duller crown and cheek. Also the blue is paler.<br /> | Females are similar but smaller and with a duller crown and cheek. Also the blue is paler.<br /> | ||
| − | Juveniles are similar to females but even more | + | Juveniles are similar to females but even more dull. |
==Distribution== | ==Distribution== | ||
Western [[USA]] and Baja California in [[Mexico]].<br /> | Western [[USA]] and Baja California in [[Mexico]].<br /> | ||
Locally common but habitat has been lost or degraded over much of its range. | Locally common but habitat has been lost or degraded over much of its range. | ||
==Taxonomy== | ==Taxonomy== | ||
| − | This is a monotypic species which is also the only member of its genus.<br /> | + | This is a [[Dictionary_M-S#M|monotypic]] species<sup>[[#References|[1]]]</sup> which is also the only member of its genus.<br /> |
The described subspecis ''rostratus'' from Big Bear Valley is not accepted by most authorities. | The described subspecis ''rostratus'' from Big Bear Valley is not accepted by most authorities. | ||
==Habitat== | ==Habitat== | ||
| Line 27: | Line 27: | ||
Nests are built as part of a colony. 3-4 eggs are laid and incubated for 16 days. Chicks fledge about 21 days later. | Nests are built as part of a colony. 3-4 eggs are laid and incubated for 16 days. Chicks fledge about 21 days later. | ||
==References== | ==References== | ||
| − | #{{Ref- | + | #{{Ref-Clements6thAug16}}#{{Ref-HBWVol14}} |
{{ref}} | {{ref}} | ||
==External Links== | ==External Links== | ||
{{GSearch|Gymnorhinus+cyanocephalus}} | {{GSearch|Gymnorhinus+cyanocephalus}} | ||
[[Category:Birds]][[Category:Gymnorhinus]] | [[Category:Birds]][[Category:Gymnorhinus]] | ||
Latest revision as of 22:36, 24 June 2017
- Gymnorhinus cyanocephalus
Identification
26-29cm (10¼-11½ in). A dull blue jay with a long and sharply pointed bill and a short tail.
- Dusty blue above
- Brighter blue on head
- Greyer flight feathers and black inner webs of primaries
- Whitish chin and throat
- Underparts like upperparts or slightly paler
- Black bill and legs
- Dark brown eye
Females are similar but smaller and with a duller crown and cheek. Also the blue is paler.
Juveniles are similar to females but even more dull.
Distribution
Western USA and Baja California in Mexico.
Locally common but habitat has been lost or degraded over much of its range.
Taxonomy
This is a monotypic species[1] which is also the only member of its genus.
The described subspecis rostratus from Big Bear Valley is not accepted by most authorities.
Habitat
Foothills where the pinyon pines Pinus edulis and Pinus monophylla occur. In central Arizona and south California also in areas of ponderosa pine Pinus ponderosa and Jeffrey pine Pinus jeffreyi.
Behaviour
Often forms very large flocks of 250 or more birds, with several birds acting as sentries for the flock.
Diet
Includes the seed of the Pinyon pine and fruits and berries. Insects of many types are also eaten.
Breeding
Nests are built as part of a colony. 3-4 eggs are laid and incubated for 16 days. Chicks fledge about 21 days later.
References
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2016. The eBird/Clements checklist of birds of the world: v2016, with updates to August 2016. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Del Hoyo, J, A Elliott, and D Christie, eds. 2009. Handbook of the Birds of the World. Volume 14: Bush-shrikes to Old World Sparrows. Barcelona: Lynx Edicions. ISBN 978-8496553507
Recommended Citation
- BirdForum Opus contributors. (2024) Pinyon Jay. In: BirdForum, the forum for wild birds and birding. Retrieved 19 April 2024 from https://www.birdforum.net/opus/Pinyon_Jay
