Eastern phoebe. 
The most typical habitats of eastern phoebes include open woodlands, stream and river bottoms, forest edges and  sunny openings where there are scattered low trees & shrubs that provide them perches while flycatching and large rock outcrops or bridges for nesting. 

Eastern phoebes are also common in many rural and suburban areas where there are sunny openings with scattered low tree & shrubs, and covered ledges such as decks and building eaves for nesting. 

Eastern phoebes usually sing perched prominently near the top of tall shrubs, short saplings, or fences or from exposed branches overhanging streams or the edge of ponds.

Male Eastern phoebes do most of the singing . Females sing occasionally but their songs tend to be brief.

The song of the Eastern phoebe is easy to learn and remember. Eastern phoebes say their name with a raspy, emphatic "Feee-Be! "
2.o-22-5-13 EAPH song_edit from original

Singing Eastern phoebes often alternate between these raspy Feeee-be! phrases and phrases that sound more like Fee-ba-lee!
3.o-22-5-13 EAPH song_edit from original

Here's four different Eastern phoebes singing their raspy song. Again, note specifically how each of these birds alternates between the Feee-Be! phrase and the Feee-ba-lee! phrase in its song.
Bird One:       1.o-22-5-13 EAPH song_edit from original
Bird two :      4.o-22-5-8 EAPH - BIRD-A_1 fee-be & fee-ba-lee song_edit from original
Bird Three:      5.o-22-5-30b EAPH fee-be & fee-ba-la song_edit from original.
and Bird Four:       6.o-22-4-30 EAPH singing & interaction calls_edit from original