Habitat: During winter, you may see this species in western and central Panama, more especially in open areas and forest borders. Distribution: This species is migratory. It usually breeds in North America and migrates south from central United States to Panama and in the West Indies. Natural History Notes: When present in Panama, the Yellow-rumped warbler feeds on the ground in open areas and will feed on insects and berries. They are usually found in groups, flying or foraging together. Conservation status according to IUCN 2008 Red list: Least Concern (LC). Characteristics: The total length of this species varies between 5 inches and 5.5 inches (measured from tip of bill to end of tail). The plumage varies with the seasons. The nonbreeding plumage consists of brown on the above with gray stripes and two white wing-bars as well as a yellow rump. Also, the throat is white and the underparts are mostly whitish with some gray coloration on the chest and the sides of the body, as well as a yellow patch on the sides of the body. The breeding plumage of the male consists of a blue-gray coloration above with stripes of black and a yellow patch on the top of the head. The part below is white with a large black band across the chest and going down along the sides of the body, which comes near the yellow patch present as well on the sides of the body. We can also distinguish a yellow rump. The breeding plumage of the female looks similar than the male's, but the general coloration is paler.