The State of Fox Sparrows
Regionally: Probably Increasing
Fox Sparrow was first detected breeding in Maine in 1983. At that point, it was known only from the far northwest corner of the state. Since then, the species seems to have expanded further south, and is now apparently a regular breeding species in the mountains of western Maine. Mountain Birdwatch data also suggest that the species is becoming more abundant in the study area. Fox Sparrow was not one of the original Mountain Birdwatch species, however, so trends prior to 2011 are not available.
Much of the range of Fox Sparrow covers remote, poorly surveyed areas of northern Canada and Alaska. As such, data on overall population trends are scanty. However, the available data, most of which is collected in the southern parts of the range of Fox Sparrow, suggests a stable population.