This location looks like many other power line right-of-ways, but has a unique tendency to attract migrating warblers, vireos, and other songbirds in unbelievable numbers (see, for example, this eBird checklist). The trick is to arrive before dawn and be ready with binoculars in hand as migrating warblers fall out of the sky. The adjacent blueberry barren supports birds like Vesper Sparrow and American Pipit. 

There is a trail beneath the power lines that cross Rabbit Path Road. This hotspot doesn’t have an exact address, but you can navigate to approximately 140 Rabbit Path Rd in Alna, ME 04535, or use the following coordinates: 44.11055, -69.63681. Parking at this site is very limited.