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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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. Size variation among the groups does not always follow Bergmann’s rulewith more southerly populations in the Sierra Madre Oriental being larger than populations to the north. Help us improve the site by taking our survey. Eggs are laid in late March through April ranging from one to six eggs with four and five being most common clutch size.

Most of their foraging takes place on ultramagina ground for insects or stored food but they also search the foliage for caterpillars and acorns.

Transvolcanic jay – Wikipedia

They usually poke or dig through the ground litter with their bills. Most of the competition in the nest is for positioning near the visiting feeder. There are more than 12, regional checklists in Avibase, offered in 9 ulramarina taxonomies, including synonyms more than languages. Hatching has been mostly observed in the morning with the female either eating or just taking away the pieces of shell that end up in the nest.

Both male and female coloration is similar. Key Behaviors apheloocoma motile sedentary territorial social Communication and Perception Perception Channels visual tactile acoustic chemical Food Habits Mexican Jays mainly eat acorns August through Marchpinyon nuts October through springand arthropods in the winter while in the summer they stick mostly with grasshoppers, crickets, caterpillars, other medium- and large-size insects, and lizards.


Mexican jay – Wikipedia

This is a common species with a wide range and the International Union for Conservation of Nature has rated its conservation status as being of ” least concern “. Transvolcanic Jay is larger than Mexican Jay, and the upperparts of adult Transvolcanic Jay are deeper, more purplish blue than in Mexican. To register to myAvibase click here.

Transvolcanic Jays occupy pine-oak forests and have large social groups, suggesting that it may be 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 Ultamarina Jay. Once she accepts, ultrxmarina male mounts the female for a brief copulation, one to five seconds.

In Maythe American Ornithologists’ Union voted to split the Mexican jay into two species, one retaining the common name Mexican jay and one called the Transvolcanic jay. Its preferred habitat is montane pine – oak forest.

Similar to Eastern group but larger in most features. Handbook of the Birds of the World Alive. The three groups inhabit three distinct mountainous regions in northern and central Mexico.

They do most of their insect hunting in the warmer months while in July they might visit the flowers of the Parry Agave Agave parryi for nectar and insects and ultramsrina through December take acorns and pinyon nuts from trees. California scrub jay A. Now while the female is at the nest apuelocoma first male will be the primary guarding male.

Transvolcanic jay

Aphelocoma wollweberi Kaup Views Read Edit Xphelocoma history. Show Details Hide Details. Ghiandaia del Messico Japanese: 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 ultraarina translations of the site in addition languages.


Each checklist can be viewed with photos shared by the birding community, and also printed as PDF checklists for field aphelocmoa. 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. By using this site, you agree to the Terms of Use and Privacy Policy. Members of her group, but not other incubating females, feed the female on nest.

Humans can also affect the lives of Mexican Jays. Avibase checklists Search Avibase search Browse by families 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. Public comments No comments yet Only members are able to post public comments. Accessed December 31, at https: 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.

At fledging, which occurs 24 to 28 days after hatching, young jays can actively fly for a few meters before gliding down. However, in larger clutches there are often runts, which shows that one or two of the eggs hatched later than the rest.

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