ハシブトアメリカムシクイ Geothlypis poliocephala

Retiring, olive and yellow warbler of savannas and grassy fields with scattered bushes or low palmetto shrubs. Not in wet marshes, unlike Common Yellowthroat. Perches on bushes and fences to sing and call, when often cocks and twitches tail, and sometimes raises a bushy crest. Sexes look alike, with a grayish crown and small black mask between the eyes and bill; populations south to Honduras have white eye-arcs, lacking in populations of southern Central America.