the black-and-white warbler (mniotilta varia) is a species of new world warbler , the only member of its genus , mniotilta .
it breeds in northern and eastern north america from the northwest territory and newfoundland and labrador , canada to florida .
this species is migratory , wintering in florida , central america and the west indies down to peru .
this species is a very rare vagrant to western europe .
this species is 14 cm (6 in) long and weighs 11 g (0.39 oz) .
the summer male black-and-white warbler is boldly streaked in black and white , and the bird has been described as a flying humbug .
there are two white wing bars .
female and juvenile plumages are similar , but duller and less streaked .
its song is a high see wee-see wee-see wee-see wee-see wee-see or weesa weesa weetee weetee weetee weet weet weet .
it has two calls , a hard tick , and a soft , thin fsss .
the breeding habitat is broadleaved or mixed woodland , preferably in wetter areas .
black-and-white warblers nest on the ground , laying 45 eggs in a cup nest .
this bird feeds on insects and spiders , and unlike other warblers , forages like a nuthatch , moving up and down tree trunks and along branches .
