A Brief General Classification 65 Yellow -throated, Sycamore* (?) , Pine, Prairie, Kentucky, Mourning, all three Yellow-throats ; Hooded, Wilson's, Canada. II. Warblers with at least two main songs : Fifteen — Black-and- White, Nashville, Cape May, Yellow, Yellow-rump, Black-and-Yellow, Chest- nut-side, Bay-breast, Blackburnian, Black-throated Green (Palm ?), Yel- low Palm, Ovenbird, Northern Water-Thrush, Louisiana Water-Thrush, Connecticut*. III. Warblers with at least three main songs: Three — Blue-winged, (Parula ?), Northern Parula, American Redstart. IV. With at least four main songs : One — Black-throated Blue. V. Warblers with flight -songs : Ten — Nashville, Ovenbird, Northern Water-thrush, Louisiana Water-thrush, Mourning, all three Yellow- throats, Yellow -breasted Chat, Wilson's*. (It is notable that these are all birds of the ground and low growth. Tree-top Warblers are more versatile perch-singers, on the whole, but few or none of them have flight-songs. Living high above the ground, they lack, it seems, the common impulse to 'tower' skyward, by which so many ground-birds, — Larks, Pipits, Spar- rows, Warblers, etc., — are at times possessed). VI. Warblers whose usual song is a trill, or barely more than a trill: Five — Worm-eating, Yellow-rump, Pine, Palm, Yellow Palm. VII. Warblers with very loud songs: Twelve — Prothonotary, Swain- son's*, Yellow-rump (?), Yellow-throated, Sycamore*, Ovenbird, North- ern Water-thrush, Louisiana Water-thrush; Kentucky, Connecticut*, Mourning; Yellow -breasted Chat. (These too, — with others of nearly as high rank, like the Hooded, the Canada, and the Yellow-throats, — are mostly haunters of the ground and bushes. The tree Warblers excel them in variety of song-forms, but average weak-voiced. VIII. Warblers whose songs are very clearly enunciated throughout, or have certain syllables strongly emphasized : Twenty-six — Prothonotary, Swain- son's* (?), Blue-winged (in part), Golden-winged*, Yellow, Black- throated Blue, Black-and-Yellow, Chestnut-side, Blackburnian (in part), Yellow-throated, Sycamore* (?), Black -throated Green, Prairie; Oven- bird, both Water-thrushes (though their songs are almost too hurried to belong under this head), Kentucky, Connecticut*, Mourning, all three Yellow-throats, Yellow-breasted Chat; Hooded, Canada; American Redstart. IX. Warblers whose songs are comparatively inarticulate : Nineteen — Black-and-White, Worm-eating, Bachman's* (?.), Blue-winged (in part), Nashville, Orange-crowned*( ?) , Tennessee, Parula, Northern Parula, Cape May, Yellow-rump, Cerulean, Bay-breast, Black-poll, Blackburnian (in part), Pine, Palm, Yellow Palm, Wilson's.
