All photographs were taken by Nathan Collie on location at Old Town.
Northern Parulas are common and their populations have slightly increased in recent years. However, during the twentieth century, poor air quality may have affected Northern Parulas by reducing mosses that they rely on for nesting. Clearcutting and the draining of bogs may have also impacted populations.
Northern Parulas can be found in mature forests, fields, pastures, and woodland. Key tree species for this bird include willow, oak, eastern hemlock, sugar and red maple, birches, and sycamore. The nesting habitat for Northern Parulas must contain moss for their nests, specifically spanish moss and beard moss.