Palm Warbler (Setophaga palmarum) [XC689006]
by Christopher McPherson from Cow Path Lane, Hollis, Hillsborough County, New Hampshire, United States (call)
Palm Warbler (Setophaga palmarum) [XC811990]
by Matthew L. Brady from San Francisco, San Francisco County, California, Canada (nocturnal flight call)
Subspecies
Affinities within genus uncertain. Has been considered most closely related to Prairie Warbler (Setophaga discolor) and Pine Warbler (Setophaga pinus). Has hybridized with Yellow-rumped Warbler (Setophaga coronata) (of nominate subspecies).
The following 2 subspecies are recognised:
palmarum (Gmelin, 1789) - Breeds central and south-central Canada from Northwest Territories and Alberta east to Ontario; migrates to Florida, Caribbean (mainly Bahamas and Greater Antilles) and, in smaller numbers, Usouthern Atlantic coast and eastern coast of central Middle America.
hypochrysea (Ridgway, 1876) - Eastern Ontario (locally) and western Quebec east to Newfoundland and Nova Scotia, and north-eastern United States (northern Minnesota, Wisconsin, northern Michigan, Maine); migrates to Gulf of Mexico coast from Texas east to western Florida.