Bell's Vireo (1 Viewer)

[Richard Klim]

Klicka, Kus, Title & Burns (in press). Conservation genomics reveals multiple evolutionary units within Bell's Vireo (Vireo bellii). Conserv Genet. [abstract] [pdf]

• Bell's Vireo Vireo [bellii] bellii (incl medius)
• Least Vireo Vireo [bellii] pusillus (incl arizonae)

Brewer 2010 (HBW 15):

Race pusillus has proportionately longer tail than nominate, plumage generally duller, crown grey; arizonae has tail long, plumage paler and more grey, with less yellow below, than nominate; medius has crown and nape more grey, back greyer (with less green) than nominate, tail longer than nominate (but shorter than on preceding two).

[eBird/Clements treats V b arizonae (Arizona Least Vireo) and V b pusillus (California Least Vireo) as distinctive monotypic subspecies groups.]

Just checked: I've seen medius in Texas, and arizonae in Sonora. :t:

 

[Richard Klim]

IOC World Bird List

www.worldbirdnames.org/updates/update-diary/
www.worldbirdnames.org/updates/proposed-splits/

2016 Jan 17: Post proposed split of Least Vireo on Updates/PS