The Transvolcanic jay (Aphelocoma ultramarina) is a medium-large (~ g) passerine bird similar in size to most other jays, with a blue head, blue-gray mantle. Scientific Name: Aphelocoma ultramarina (Bonaparte, ). Common Name(s). English, –, Ultramarine Jay, Transvolcanic Jay. Click here for more information about the Red List categories and criteria. Justification of Red List category. This species has a very large range, and hence does.

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They are fed over entire nesting period and several weeks after fledging. In birds, naked and helpless after hatching.

Aphelocoma Scrub jays California scrub jay A. The mating system of Mexican Jays seems rigid but in fact is quite flexible. Once she ultramxrina, the male mounts the female for a brief copulation, one to five seconds. Thus, as of this decision, there are now five described subspecies of Mexican jays that are divided into three divergent groups see below.

International Union for Conservation of Nature. On the other hand, Mexican jays in Arizona – also arid habitat – have a washed-out appearance, in accordance with Gloger’s rule. The period of highest mortality is during their first summer.

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Juveniles have an all-black exterior to the bill after fledging, but roof of inner upper mandible can remain partially white for up to two years.


You must be logged in to view your sighting details. Avibase is also apehlocoma in the following languages: Related taxa Other synonyms Catalan: They usually poke or dig through the ground litter with their bills.

Populations to the north retained the common name Mexican jay, but the Latin name changed to Apheloccoma. Zavattariornis Stresemann’s bushcrow Z.

It feeds largely on acorns and pine nutsbut includes many other plant and animal foods in its diet. Avibase checklists Search Avibase search Browse by families Ultramqrina There are a few ways by which you can help the development of this page, such as joining the Flickr group for photos or providing translations of the site in addition languages. Both male and female coloration is similar.

Taiwan blue magpie U. Mexican Jays are greyish blue above and dirty white to ashy-grey below. Vegetation is dominated by stands of dense, spiny shrubs with tough hard aphlocoma waxy evergreen leaves.

Mountains w Mexico nw Jalisco to ne Colima Source: Genetic breaks in mitochondrial and microsatellite DNA occur abruptly between the groups, indicating some barriers to genetic exchange McCormack et al.

Mexican Jay (Aphelocoma ultramarina)

Adults have a black bill while juveniles retain a pale orange lower mandible through their first year and sometimes similar spots in their second year. It has a cooperative breeding system where the parents are assisted by other birds to raise their young.


Philadelphia 4 pt2 p. In Maythe American Ultramqrina Union voted to split the Mexican jay into ultramaina species, one retaining the common name Mexican jay and one called the Transvolcanic jay. Its preferred habitat is montane pine – oak forest. Geai de Siebers, Geai des volcans ou G. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.

Extra-pair copulations have been observed in both males and females.

Contribute to Avibase Acknowledgements Flickr group Media stats Flickr group members Media wanted Translate Avibase is also available in the following languages: At this age, their main form of locomotion is jumping, so if they get too far away or down a tree they can usually jump their way back up. Ghiandaia messicana, Ghiandaia pettogrigio Japanese: Most of the competition in the nest is for positioning near the visiting feeder. Ghiandaia del Messico Japanese: