The Black-and-White Warbler is striped black and white lengthwise. Female has whiter underparts. It is impressive to first see flittering in the trees and brushes. Its habitat is woods: trunks, limbs of trees. It can be seen creeping along trunks and branches, as was the present case. Its normal range is from the mid states and Canada to the east coast. It winters from the southern states to South America. I sighted it on the migration North for two days.
You can see the sited location at the Wehr Nature Center, Milwaukee, WI by clicking the link below.