The Florida birds are slightly larger and have larger white spots in their tails. Reddish streaks on back are distinctive, but can be difficult to see or absent on immatures. Their nests are often parasitized by Brown-headed Cowbirds, which is also a problem for bird species ranging from Painted Bunting to … Incubation lasts 12 days and young leave the nest 8-11 days after hatching and are independent at 34-55 days after hatching. Female Prairie Warblers commonly eat the eggshells after their young hatch, consuming the shells in 15 to 90 seconds. Female/immature Females/immatures are paler yellow than males with blurry streaks on the sides. Upperparts are duller olive. Long tail is often pumped up and down, but not as consistently as Palm Warbler. Not a bird of open prairies, this warbler nests mainly in young second growth scrub and densely overgrown fields in eastern North America. This species raises one or two broods per season. Prairie Warbler nests are open cups of plant material and animal hair, built by the female low in a tree or shrub. The head can be yellowish or grayish with darker semicircle under the eye, in an echo of the male's … In Florida, more permanent populations are found in coastal mangroves. The Prairie Warblers living in the Florida mangroves are considered to be a separate subspecies from the more widespread migratory ones. In the resulting compact cup, the female usually lays 4 (range 3-5) very pale cinnamon or gray eggs, spotted or dotted with browns or grays. Most Prairie Warbler pairs raise one brood per … Small warbler, yellow overall with black streaks on sides and unique face pattern. Such habitats are often temporary, and colonies may shift around from year to year.