In 1987 we built a transect of bird boxes designed to attract this secondary hole-nesting species. The number of boxes has grown to 300 distributed over 18 miles of the lower James River. The warblers use these boxes extensively, so much so that we have obtained clutch size data from more than 1,200 nests and have banded approximately 3,000 warblers.
Females incubate eggs, feed young, and do most of the work in nest building.
Males rarely enter nest boxes. Common predators are raccoons, black rat snakes, and several rodents, including white-footed mice. Computer modeling of the energetics of the prairie rattlesnake.