ML63664

影音備註

NOTES: Neotropical Institute Cut # 8. Bulk reel: 200Weather: Clear, fair; was foggy during night, therefore tree dripI believe this is same bird as Cut 7.a)0535hr. Natural song. (As have better recording, only a portion of this recording is being saved as a control for comparison.) Recorded with reflector pointed at sky and then a brief bit with it focused on the bird. Note the harmonics emphasis! Quality: "1-2" (tree drip). Level: +3. 3.75 ips.Bird sometimes omits the final motif.Bird cont'd singing on same perch, or very near it, until ~0615 or bit later.b) 0625hr. Bird now on a different perch; it was singing, then began "bother" calls (due to noise, only the bother calls saved, not the song). The bird then began to sing again (not saved). In small sapling in undergrowth, ~30m away from where had been singing. Quality: 3. Level: +3 (not in focus).Bird now on small sapling in undergrowth only ~2m above ground (part a) perches were high in large tree and I record with reflector focused on bird and pointed at sky which is partially visible only ~10m away. Bother calls and song, both. This is after playback of bother calls, which brought the bird closer again.The small undergrowth saplings where these curassows often perch, as in Cut 3b, or to feed, seem hardly able to support a bird of this size. Often the main branches are .75" or less and the birds may often be out near the end of these branches probably obtaining support from several where they may cris-cross.Also, the silence with which these large birds can move about is remarkable; e.g. I did not hear it when it moved from the perches in a) to the place where I found it (I went looking for it)@ beg. of b). Similarly, when bird approached on ground after playback and then eventually receded, I did not hear it, except when it vocalized. When bird approached after playback (it was definitely attracted by playback of the bother calls), it both called and sang from the ground, before mounting the sapling. At the end, when it left it walked slowly away, calling and singing. Response to playback: Approach.