Northern Mockingbird (Mimus polyglottos) [XC772601]
by Barry Edmonston from San Simon Cienega, Cochise County, Arizona, United States (imitation, song)
Northern Mockingbird (Mimus polyglottos) [XC498056]
by Richard E. Webster from Finca San Juan, Mayabeque, Cuba (alarm call)
Subspecies
Forms a superspecies, and sometimes considered conspecific, with Tropical Mockingbird (Mimus gilvus). Apparent hybrids between the two reported in southern Mexico. Reported as interbreeding, probably rarely, with Bahama Mockingbird (Mimus gundlachii) in Caribbean. Subspecies leucopterus sometimes merged with nominate.
Proposed subspecies elegans and delinificus (both from Bahamas), described largely on basis of whiter underparts, and dominicus (Haiti), supposedly with more white in wings, considered better treated within orpheus.
The following 3 subspecies are recognised:
leucopterus (Linnaeus, 1758) - Extreme south-western Canada (southern British Columbia east to southern Manitoba) and western USA (east to Nebraska and Texas) south to southern Mexico (rarely, to Isthmus of Tehuantepec), including Socorro I (off western Mexico) and many other offshore islands in Pacific Ocean and Gulf of California.
polyglottos (Linnaeus, 1758) - Extreme south-eastern Canada and eastern USA.
orpheus (Linnaeus, 1758) - Bahamas south to Greater Antilles, Cayman Is and Virgin Is.
BirdLife International Species Factsheet