Black-and-white Warblers are usually spotted creeping on tree trunks as they search for insects. Their behavior is more typical of a nuthatch than a warbler. David caught this warbler on the ground with his feast. Immature females are a more camouflaged version of the boldly colored males. The song is a distinctive, easy to recognize, weeseee, weeseee, weeseee Black-and-white Warblers usually nest at ROLF. Their nests are usually constructed on the ground, at the base of a tree or stump.