Mount Blue State Park,
USA44° 40' 44.3" N 70° 26' 58.3" W 24
composed of seven high-frequency buzzy elements (sounds
much higher pitched than Black-throated Blue); five
level elements at 6.1 kHz (increasing in volume), followed
by a lower frequency element than a final, longer and
louder higher element.
from fairly high in spruces in mixed spruce/maple/oak