Pine Warbler

Hooded mergansers at the Assabet River National Wildlife Refuge, photographed by Dan Trippe.
Dan Trippe photographed hooded mergansers, ring-necked ducks, a belted kingfisher, pine warblers, American woodcock chicks, a blue-gray gnatcatcher, barn swallows, a palm warbler, a yellow-rumped warbler, a common grackle, an...
A pine warbler at Tower Hill in Boylston, photographed by Nancy Wright.
Nancy Wright photographed this pine warbler at Tower Hill in Boylston.
An eastern bluebird in Lincoln, photographed by Ron McAdow.
Ron McAdow photographed an eastern bluebird and a pine warbler in Lincoln.