"Females, immature birds, and males in fall and winter plumage are dingy grayish brown above and lightly streaked below. All display the yellow rump and side patches that make the yellow-rumped warbler recognizable at any season of the year." This shows a variety of Yellow-Rumped Warbler that is called the Myrtle Warbler. This is the adult male in breeding plumage. An another. Photo taken with a Nikon D70 using a Nikon 300mm f/4.5 lens. February 3, 2006.