Sound stimulation was (other): playback drumming. Response to playback: Approach.
Paul A Schwartz
4 Jul 1968
- Rio Grande; ~ 1 km north of km 9.5; El Palmar
- 7.9666667 -61.8833333
- 250 meters
- NAGRA III
- Electro-Voice 650
- Parabola 91.4cm (36in)
NOTES: Neotropical Institute Cut # 7. Bulk reel: 254
Weather: Clearing after rain. Some natural drumming. Quality: 2. Level: +5.
The bird couldn't be seen but playback of these drums brought close a male of this species which was then collected (= male #6671). Prominent in the background is Hylophilus thoracicus.