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Yucatan Vireo Vireo magister Scientific name definitions

David Brewer
Version: 1.0 — Published March 4, 2020
Text last updated June 21, 2013

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Introduction

On the mainland of Middle America, the Yucatan Vireo is confined to southeast Mexico and adjacent Belize, but it is also found on a number of offshore islands, including off Belize and Honduras, and even further afield on Grand Cayman. Four subspecies are recognized reflecting the species’ partially insular distribution. The Yucatan Vireo is one of two sedentary species that form part of the Red-eyed Vireo (Vireo olivaceus) superspecies, but its plumage is obviously duller and less contrasting than other members of this grouping, although the song is similar to that of Black-whiskered Vireo (Vireo altiloquus).

Field Identification

15 cm; male 19·5–24·8 g and female 16·7–22·5 g (nominate), 13·5-17 g (caymanensis). Nominate race has pale brownish-white supercilium, dull brownish-grey lores and postocular region; crown to nape and upperparts dull, rather dark grey-brown, with olive tinge on back; primaries and secondaries dull blackish-grey, narrow paler olive edgings on outer webs, rectrices dull dark brownish-grey; throat and centre of chest dull buffy white, side of chest greyish, centre of belly and vent buffy white, flanks and sides dull greyish washed olive; iris blackish; bill notably heavy and stout, overall grey, lower mandible with paler grey base; legs bluish or blue-grey. Sexes alike. Juvenile apparently undescribed. Race decoloratus is larger than nominate, with longer bill and tail, dull above, crown dark greyish, paler and more whitish below; stilesi is brighter and more olive-green on rump and edges of rectrices than other races; caymanensis is small, dull olive above, brightest on rump, feet (of type specimen) slaty brown.

Systematics History

Editor's Note: This article requires further editing work to merge existing content into the appropriate Subspecies sections. Please bear with us while this update takes place.

See V. olivaceus. Races decoloratus and stilesi doubtfully valid. Four subspecies recognized.

Subspecies


SUBSPECIES

Vireo magister magister Scientific name definitions

Distribution

SE Mexico (Quintana Roo, including islands of Mujeres and Cozumel) and mainland Belize.

SUBSPECIES

Vireo magister caymanensis Scientific name definitions

Distribution

Grand Cayman I.

Distribution

Editor's Note: Additional distribution information for this taxon can be found in the 'Subspecies' article above. In the future we will develop a range-wide distribution article.

Habitat

Mangroves, mixed woodland, littoral forest, humid and semi-humid scrubby woodland; thickets in pine (Pinus) ridges in Belize; on Grand Cayman limestone-associated forest, especially in winter.

Movement

Sedentary. Single report of individual of nominate race caught in S USA (Galveston County, in Texas) on 28th Apr 1984; has been disputed, albeit with possibly more vigour than justification.

Diet and Foraging

Little information. On Grand Cayman said to feed mostly on fruit. Forages quietly and secretively in low and high levels of foliage.

Sounds and Vocal Behavior

Song a series of phrases of two or three syllables, "whoi whu" or "sweet brid-get", separated by pauses; more leisurely and mellower than that of V. flavoviridis, very similar to song of V. altiloquus. Calls include a soft, dry "shi-tchi-chi-chi" chatter, a low, frequently repeated "bik-bik", and a "wik" like that of a woodpecker (Picidae).

Breeding

Season Apr–Aug on Grand Cayman I; birds in breeding condition in Apr and May in Belize. Nest a deep cup, suspended by its rim in crotch of lateral fork of tree or shrub branch. Clutch 2 eggs, white with few (or hardly any) dark spots. No other information.
Not globally threatened. Restricted range species: present in Cozumel Island EBA, and in Cayman Islands and Eastern Yucatán Secondary Areas. Very common in parts of range. In Belize, apparently more abundant on offshore cays than on mainland. Status of island races not well known; most likely to be of concern.
Distribution of the Yucatan Vireo - Range Map
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Distribution of the Yucatan Vireo

Recommended Citation

Brewer, D. (2020). Yucatan Vireo (Vireo magister), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.yucvir.01
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