The western counterpart of the ruby-throated, the black-chinned regularly pumps its tail. Monotypic. Length 3.3–3.8"; bill 16–22 mm. Best marks for all ages are narrow inner primaries and ...
The spotted towhee continued at the Provincetown Airport, and the mystery hummingbird of Provincetown has been confirmed as a black-chinned hummingbird, only the third ever recorded on Cape Cod.