This spring, as you walk outside, keep an ear open for two distinctive bird songs: zee zee zee zee zo zee or zee zee zo zo zee. If you hear them, you’ve identified a black-throated green warbler (Setophaga virens), a bird that is often heard but rarely seen. The first song is a male attempting to communicate with the female of the species. The latter song, also sung by the male, is driven by territorial clashes. Both are regular sounds in forested areas of northern New England, especially where coniferous t … (read more)
