Blue-gray Gnatcatcher – 5/8/19
Observer: Paul Lauenstein
Observation Date: 5/8/19
Observation Time: 9:15 a.m.
Observation Location: Moose Hill Audubon Wildlife Sanctuary
Common Name: Blue-gray gnatcatcher
Scientific Name: Polioptila caerulea
Comments: The blue-gray gnatcatcher is the northernmost-occurring species of gnatcatcher, and the only truly migratory one. Most members of its genus are resident in Central and South America.
The nesting range of blue-gray gnatcatchers has been shifting northward since the early twentieth century. Over the last quarter of that century, the shift was about 200 miles, in concert with increasing average temperatures.
More Information: All About Birds