Leonard J Peyton
30 Jun 1971
- Mt. McKinley National Park; Mt. McKinley National Park Rd.; Mile 54.1
- 63.5 -150.0666667
- 1100 meters
- NAGRA III
- Sennheiser MKH 104
- Parabola 99.1cm/30.5cm (39in/12in)
Singing in defense of nesting territory; Perched 10ft. up in top Willow bush.
Bird attracted and induced to sing by playback of Mile 55.2 song last series on tape.