Field notes, v1602
Page 581
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
86a 15mi. NNW Tacambos, 9000ft. June 16 of calling. I collected 2 luises as they foraged silently about 10 feet above the ground. Then a lone bird flew into a large pine and gave a horse call (not remembered) and I collected it also. This call may have been an attempt to locate other luises of the group. These luises have a triplet call which I have never heard zonatus give. I did hear a similar call given by nelsoni, however. - A long call: Che-cha-cha-chechoche, che-che-che etc, etc; the triplets coming very fast and producing a "rolling" sound - the notes almost seeming to overlap on one another. This may be given by more than one bird. I did not hear any "flight calls" today. Calls of these luises do not differ from those of luises collected near Puerto Carnica. This species is always found in groups - thus may be "contact" as the first one encountered today or more "open" as the second found today. The calls - at least some of them - probably serve purpose of keeping the members of the group in contact. - Martinis (sp?) flying over camp in late afternoon with some swallows. Took 6 or so color photos of this area, including several of slope where I hunted this morning. Clouded a bit just before dark after 2 hours of rain this afternoon.