I have noticed that the bobolink does not sing the same in different localities. In New Jersey it has one song; on the Hudson, a slight variation of the same; and on the high grass-lands of the interior of the State, quite a different strain,--clearer, more distinctly articulated, and running off with more sparkle and liltingness. It reminds one of the clearer mountain air and the translucent spring-water of those localities. I never could make out what the bobolink says in New Jersey, but in certain districts in this State his enunciation is quite distinct. Sometimes he begins with the word _gegue, gegue._ Then again, more fully, _be true to me, Clarsy, be true to me, Clarsy, Clarsy,_ thence full tilt into his inimitable song, interspersed in which the words _kick your slipper, kick your slipper,_ and temperance, temperance (the last with a peculiar nasal resonance), are plainly heard. At its best, it is a remarkable performance, a unique performance, as it contains not the slightest hint or suggestion, either in tone or manner or effect, of any other bird-song to be heard. The bobolink has no mate or parallel in any part of the world. He stands alone. There is no closely allied species. He is not a lark, nor a finch, nor a warbler, nor a thrush, nor a starling (though classed with the starlings by late naturalists). He is an exception to many well-known rules. He is the only ground-bird known to me of marked and conspicuous plumage. He is the only black and white field-bird we have east of the Mississippi, and, what is still more odd, he is black beneath and white above,--the reverse of the fact in all other cases. Preeminently a bird of the meadow during the breeding season, and associated with clover and daisies and buttercups as no other bird is, he yet has the look of an interloper or a newcomer, and not of one to the manner born.