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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Helpers are offspring from previous years. MyAvibase allows you to create and manage your own lifelists, and produce useful reports to help you plan your next birding excursion. It is most readily distinguished from the similar western scrub jay by the plain unstreaked throat and breast, and the mantle contrasting less with the head and wings.

Members of her group, but not other incubating females, feed the female on nest. Garrulus Eurasian jay G. Transvolcanic Jay is larger than Mexican Jay, and the upperparts of adult Transvolcanic Jay are deeper, more purplish blue than in Mexican.

The iris is brown and legs are black. In birds, naked and helpless after hatching. Accessed May 8, at http: Both male and female coloration is similar. 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.

Descriptive notes 28—32 cm; male c. Corvus ultramarinus Avibase ID: Mexican Jays range from the north in central Arizona, southwestern New Mexico and west-central Texas through the eastern central mountain chain south to Puebla, Guerrero and central Veracruz and went to Jalisco and Colima.

Transvolcanic Jays occupy pine-oak forests and have large social groups, suggesting that it may aphlocoma a cooperative breeder; but, in contrast to the northern populations of Mexican Jay in Arizona, which have been studied extensively, little is known about the biology of Transvolcanic Jay. Extra-pair copulations have been observed in both males and females. In the winter, the Mexican jay’s diet consists mainly of acorns and pine nutswhich are stored ultramaarina the autumn.


Public comments No comments yet Only members are able to post public comments. At the Southwestern Research Station in Portal, Arizona 2 males and 1 female reached 19 years of age and one of these males had a nest with eggs in his 21st calendar year Brown, There are a few ways by which you can help lutramarina development of this page, such as joining the Flickr group for photos or providing translations of the site in addition languages.

Mexican Jay (Aphelocoma ultramarina)

There is an area of apparent hybridization in San Luis Potosi that deserves study. Your sightings No sightings Add to a lifelist: It is assumed that the young hatch on the same day because there is not aphelocooma large size difference between young in a clutch.

The Academy of Natural Sciences. Avibase is also available in the following aphelovoma Search Avibase search Browse by families. Ghiandaia messicana, Ghiandaia pettogrigio Japanese: Females usually begin incubation after the third or penultimate egg has been laid.

Contribute 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. It resembles the western scrub jaybut has an unstreaked throat and breast. Accessed December 31, at https: Year-round Ultramaeina Breeding Non-Breeding.

Often specializes on seeds of pine and oak; probably also consumes fruits, nectar Common green magpie C.

Mexican jay – Wikipedia

This dependence wanes when they start gaining foraging skills of their own. Mexican Jays are found in habitats usually containing pine Pinus spp. Ulramarina Australian and Melanesian species Little crow C. Related taxa Other related concepts Aphelocoma [californica x ultramarina] hybrid Aphelocoma [ultramarina x unicolor] hybrid Other synonyms Catalan: The aphellcoma system of Mexican Jays seems rigid but in fact is quite flexible. Only subscribers are able to see the bibliography.


Vegetation is dominated by stands of dense, spiny shrubs with tough hard or waxy evergreen leaves.

Its range somewhat overlaps with the western scrub-jays, but, where they co-occur, the two species seem to show ecological and morphological character displacement Curry et al. Young start out on average at 6 g at hatching and can reach g in 18 to 20 days.

Iteroparous animals must, by definition, survive over multiple seasons or periodic condition changes. However, in larger clutches there are often runts, which shows that one or two of the eggs hatched later than the rest. Contribute 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.

Ghiandaia del Messico Japanese: Bird checklists – taxonomy – distribution – maps – links. May be maintained by periodic fire.

Mexican jay

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. Once she accepts, the male mounts the female for a brief copulation, one to five seconds.

Transvolcanic Jay is similar to Mexican Jay Aphelocoma wollweberiand indeed until recently Transvolcanic Jay was classified as a subspecies group of Mexican. Found in coastal areas between 30 and 40 degrees latitude, in areas with a Mediterranean climate. Login or Subscribe to get access to aphelcooma lot of extra features!