Carolina Wren (Thryothorus ludovicianus) [XC288991]
by Peter Boesman from Overland Park Arboretum & Botanical Gardens, Johnson County, Kansas, United States (call)
Carolina Wren (Thryothorus ludovicianus) [XC358188]
by Thomas Magarian from Valley Forge National Historical Park, Montgomery County, Pennsylvania, United States (call)
Subspecies
Thryothorus ludovicianus (Sibley and Moroe 1990, 1993) was provisionally split into Carolina Wren (Thryothorus ludovicianus) and Thryothorus albinucha by Stotz et al. (1996) but this treatment has not been adopted, following SACC (2005).
Traditionally placed in present genus as its only North American representative. However, recent DNA work suggests that it may be more closely allied with Thryomanes. Often considered to include Thryothorus albinucha as a geographically disjunct subspecies, a view supported by recent observations of similarities in song.
Proposed subspecies oberholseri (occurring in central-southern Texas and possibly adjacent parts of Mexico) rather puzzling, said to be more rufescent than lomitensis but plumage is variable and is perhaps a variant of latter and probably not worthy of recognition.
The following 10 subspecies are recognised:
ludovicianus (Latham, 1790) - South-eastern Canada (southern Ontario, irregularly east to southern Quebec) and eastern USA (southern Wisconsin and New England south to Texas and northern Florida).
miamensis Ridgway, 1875 - Florida southern from c. 30º south.
nesophilus Stevenson, HM, 1973 - Dog I, off north-western Florida.
burleighi Lowery, 1940 - Islands of Cat, Ship and Horn, off Mississippi coast.
oberholseri Lowery, 1940 - South-western Texas (south-central USA) and northern Mexico.
tropicalis Lowery & Newman, RJ, 1949 - North-eastern Mexico (eastern San Luis Potosí, southern Tamaulipas).
albinucha (Cabot, S, 1847) - South-eastern Mexico (Yucatán Peninsula) to Petén of northern Guatemala. Considered by some authors to be a distinct species, White-browed Wren (Thryothorus albinucha).
subfulvus Miller, W & Griscom, 1925 - Arid interior of Guatemala to north-western Nicaragua.