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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Ultramarine Jay Ultramafina ultramarina. Avibase has been visited , times since 24 June This change also takes place in females, with first year females averaging g in June and fourth year females averaging g. Bird checklists – taxonomy – distribution – maps – links. All members of a breeding group participate in rearing offspring.

Transvolcanic jay – Wikipedia

However, they are omnivorous in all seasons and their diet includes a wide variety of plant and animal matter, including invertebrates, small amphibians and reptiles, and birds’ eggs and nestlings McCormack and Brown The mating system of Mexican Jays seems rigid but in fact is quite flexible. Young start out on average at 6 g at hatching and can reach g in 18 to 20 days. It is assumed that the young hatch on the same day because there is not a large size difference between young in a clutch.

MyAvibase allows you to create and manage your own lifelists, and produce useful reports to help you plan your next birding excursion. California scrub jay A. In eastern populations Texas birds are more typically territorial.


Mexican jay

They are fed over entire nesting period and several weeks after fledging. The Birds of North America.

Avibase checklists Search Avibase search Browse by families Contribute Aphflocoma are a few ways by which you can qphelocoma the development of this page, such as joining the Flickr group for photos or providing translations of the site in addition languages.

This terrestrial biome includes summits of high mountains, either without vegetation or covered by low, tundra-like vegetation. The Mexican jay is a medium-sized jay with blue upper parts and pale gray underparts. Ghiandaia del Messico Japanese: Females usually begin incubation after the third or penultimate egg has been laid.

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In Arizona, eggs were pale green in color but a pale blue with brown speckling in Texas. 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 ultraamrina.

Humans can also affect the lives of Mexican Jays. Geai de Siebers, Geai des volcans ou G.

ADW doesn’t cover all species in the world, nor does it include all the latest scientific information about organisms we describe. There are many ways to contribute—we need species information, photographs, audio, video, translations, maps, distribution data, and bird sightings. Members of her group, but not other incubating females, feed the female on nest. Similar to Eastern group but larger in most features. In birds, naked and helpless after hatching.


Biddulph’s ground jay P. Zavattariornis Stresemann’s bushcrow Z. MyAvibase allows you to create and manage your own lifelists, and produce useful reports to help you plan your next birding excursion.

Mexican Jays are not migratory and often do not leave their natal group. Most of the competition in the nest is for positioning near the visiting feeder. Iteroparous animals must, by definition, survive over multiple seasons or periodic condition changes. Most of their foraging takes place on the ground for insects or stored food but they also search ultraamarina foliage for caterpillars and acorns.

Transvolcanic Jay (Aphelocoma ultramarina) ·

Checklists There are more than 12, regional checklists in Avibase, offered in 9 different taxonomies, including synonyms more than languages. However, they are primarily preyed upon by raptors especially at feeding stations or picnic areas. In lower elevations they can be found in oak-lined creeks and sometimes even into grassland areas. Head, sides of neck and nape blue while back a brownish-grey. Thus, as of this decision, there are now five described subspecies of Mexican jays that are divided into three divergent groups see below.

To register to myAvibase click here. Until recently considered conspecific with A.