Did you know that the northern parula was originally called the blue yellow-backed warbler?
Northern parulas are gray, with olive patch on their backs, yellow throats and breasts, and white bellies. Least Concern - Population Increasing
Forests, fields, bottomlands, pastures, streams, and swamps
Northern parulas build nests at the end of branches in moss or lichen out of grass, hair, lichen, moss, and pine needles.
Spring, summer
Insects, spiders, berries, bud scales, nectar and, seeds
Northern parulas forage by gleaning leaves.
Pine Warblers
Northern parulas are often confused with pine warblers because both have yellow and gray on them.
Northern parulas have more gray and less yellow on them.