It has been said that this bird might also be called a coffee warbler, because it’s often been seen wintering around coffee plantations in Central America. Shade-grown plantations have been found to be important for Tennessee Warblers in the dry winter months. During the breeding season, they are found primarily in the boreal forest of Canada, feeding on spruce budworms.  Photo: WarblerLady (CC BY-ND 2.0)