Paul A Schwartz
4 Jul 1966
- Rio Grande; km 10.5; El Palmar
- 7.9666667 -61.8833333
- 250 meters
- NAGRA III
- Electro-Voice 650
- Parabola 91.4cm (36in)
NOTES: Neotropical Institute Cut # 1. Bulk reel: 59
Weather: Cloudy fair; moon. This is natural song given spontaneously. It's possible it could be Otus [illegible and line drawn through species name] but I doubt it. Quality: 2. Level: +5.
Then, I moved a bit closer. Quality: 1-2; Level: +5
Note 28/IV/67 at Rio Grande a bird singing the same song was collected = male #5727.
Then I moved still closer and voice re the bird's position. [sic]
Playback brought no reaction that I could detect, except perhaps that the bird flew much farther away. Note: 28/IV/67 @ Rio Grand a bird singing the "same' song was collected = male #5727.
Note re Cut 1). Early in the evening (ca 7:00PM), an Otus _____ started to sing ca 100 further back the ravine and in the mid-story, i.e. well within the vegetation. I went there w/ the field tape and called the bird to me but it was probably 8:00 to 8:30PM before I was able to see the bird and then collect it.
After that I made no further playback.
About 11:15PM, (I was sleeping on top of the car) I awoke to hear the present song and as soon as I could get the equipment ready, I started to record it.
There is some possibility this could be the mate of the bird collected but I rather doubt it. This bird was apparently in the top of one of the tallest trees in the ravine, not a customary place for O. ________. Also the song is different from anything so far recorded for that [O. _____]. I note a great similarity between this song and one of those I recorded of O albogularis in the Andes. I suspect this owl may be O. watsoni.
April [blank],1967 - Bird collected and found to be Glaucidium minutissimum
LNS: Species changed from Glaucidium minutissimum to G. hardyi to reflect current taxonomy of the G. minutissimum complex (see Howell and Robbins 1995). -Matt Medler, 27 Jan 2010.