Bird Guide

Island Scrub Jay vs Transvolcanic Jay

Island Scrub Jay (Aphelocoma insularis)

Island Scrub Jay

Aphelocoma insularis

Medium116 gShrubland

The island scrub jay is closely related to the California scrub jay (the coastal population found on the adjacent mainland), but differs in being larger, more brightly colored, and having a markedly stouter bill. They will bury, or cache, the acorns in the fall and may eat them months later. They also eat insects, spiders, snakes, lizards, mice and other birds' eggs and nestlings.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Ben Sims · CC0
Transvolcanic Jay (Aphelocoma ultramarina)

Transvolcanic Jay

Aphelocoma ultramarina

Medium113 gForest

The Transvolcanic jay is 28 to 32 cm (11 to 13 in) long and weighs 120 to 150 g (4.2 to 5.3 oz). The sexes have the same plumage though males are slightly larger than females. Adults of the nominate subspecies have a mostly dark bluish head with black lores and a pale grayish throat. Their upperparts are bluish purple and their underparts dingy grayish white that is lightest on the undertail coverts. Subspecies A. u. colimae is slightly smaller than the nominate and paler overall with less purplish on its upperparts. Voice: The Transvolcanic jay's voice is very similar to that of the Mexican jay, and is described as "an upslurred grating call note, repeated singly, doubled or in series". The grating appears to decrease from the beginning to the end of each note.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Juan Cruzado Cortés · CC BY 4.0

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Photos and recordings are credited to their authors under the licence shown. Full profiles: Island Scrub Jay and Transvolcanic Jay.