Black-and-white Warblers (Mniotilta varia) are black and white all over. They have a black crown with bright white stripes behind each eye, a black-and-white back, a greyish tail with white spots at the corners. and a white median head stripe bordered by black. The bill, legs and feet, are all black. It forages unlike any other warbler by moving up and down the trunks of trees and crawling under and over branches in a style similar to that of a nuthatch. They occur in north America, Central America, and northern South America.