_Food._--Very little information is to be found concerning the food of this warbler, but insects undoubtedly constitute its diet. Howell (1924) says: "Five stomachs of this species from Alabama contained remains of caterpillars and a few fragments of Hymenoptera, probably ants." _Behavior._--Wayne (1907), in writing of this bird on its breeding grounds, says: "Bachman's Warbler is a high-ranging bird, like the Yellow-throated Warbler, and generally sings from the top of a sweet gum or cypress. It appears to have regular singing stations during the breeding season, and upon leaving a tree it flies a long distance before alighting. On this account it is impossible to follow the bird through the dark forest, and it can only be detected by its song. I have occasionally seen the males in low gall-berry bushes within six or eight inches of the ground, but their usual resorts are among the topmost branches of the tallest forest trees." Brewster (1891) had similar experience with migrating birds in Florida: Nearly or quite all that has been hitherto written about this Warbler would lead one to infer that its favorite haunts are dense thickets, undergrowth, or low trees, and that it seldom ventures to any considerable height above the ground. Our experience, however, was directly contrary to this. * * * The bird, moreover, not only frequented the tops of the tallest trees, but at all times of the day and under every condition of weather kept at a greater average height than any other Warbler excepting _Dendroica dominica_. In its marked preference for cypresses it also resembled the species just named, but unlike it was never seen in pines. * * * At the time of our visit the Suwanee bottoms were alive with small birds many of which were doubtless migrants. They banded together in mixed flocks often of large size and motley composition. * * * Such a gathering was nearly certain to contain from one or two to five or six Bachman's Warblers. These with the Parulas were most likely to be feeding in the upper branches of some gigantic cypress, at least one hundred feet above the earth, where they looked scarcely larger than bumble bees. * * *