Eastern Wood-Pewee  Contopus virens
If not for its song this middle canopy dwelling bird would be nearly inconspicuous, with its dull brown plumage, in spite of its abundance. 
It favors a habitat of mainly deciduous woodlands with margins or edges of clearings as it flies out from a perch to catch insects.
One potential cause of the decline of the Eastern Wood-Pewee population is the over population of white-tailed deer in the Eastern forests.  In areas with high deer density, the intermediate canopy is disturbed by browsing, affecting the foraging space of the flycatcher.

.Copyright Mark Tiefenbach
Deepbrook Nature Photography