Empids are notoriously difficult to ID and especially in the fall when not calling and considering Yellow-bellied Flycatchers do not breed in NC, they are really never on territory and unlikely to call. I have had several empids in NC that I am fairly certain were YBFLs based on field marks alone. This was one of them photographed at Burnt Mill Creek in Wilmington, NC. The malar (cheek) did not contrast much with the throat, it was yellowish throughout the throat and breast and it had a nice eye ring. This one was a juvenile bird as the wing bars were yellowish. Lastly, it was damn cute which believe it or not some use as one of the field marks for YBFLs.