Both of these photos show a Northern Parula, a bird included in the warbler family. The photo on the left, a first year Northern Parula, was taken the same morning as the other photos in today’s set. The photo on the right was taken in the spring, showing the fresh breeding plumage of this species. This is not the only warbler that looks much different in the fall than it does in the spring. Such variations are very frustrating for beginning birders.