geothermometer (je"othermometer)

[ 2497 parts of America, all olive above and more or le yellow below, with a characteristic black mask. Some related forms are the mourning-warbler of the eastern United States, G. philadelphia, and its western representative, G. macgillivrayi. The genus Oporornis, containing the Kentucky and the Connecticut warblers, is now sometimes brought under Geothlypis.