ML 62814


Red-ruffed Fruitcrow -- Pyroderus scutatus More
Audio »
Video »
species »




Playback Self



perform visual display



Paul A Schwartz
8 May 1966 at 05:20

  • Venezuela
  • Upata; Sta. Maria
  • 8.0166667   -62.4
  • 250 meters
  • Mono
    Sampling Rate
    Bit Depth
  • Electro-Voice 650
    Equipment Note

NOTES: Neotropical Institute Cut#5. Extra cut length: 12:00; 11:08; 4:50; 7:48; 7:26Weather: cloudy fair Started @5:20AM. Ortalis motmot sang nearby at 5:20. Others and also Hypnelus ruficollis and Myiarchus venezuelensis sang in background (recording not saved). First sound of Pyroderus @~5:22 1/2, then hear birds flying in and song started for short period. Then after period of silence, song again. At ~5:30 it was getting light enough to be able to see and could spot~ 6-8 birds. Then noted 6-8 displaying males, then noted female (comments on tape). Eventually note a second female5:40AM cloudy; Leader tape 5:45AM; Continues (with comments). At ~5:44 birds suddenly left but then returned (voice comments). Then most of birds left again, then immediately started returning. Then apparently at least some moved to a different area to display. Then some returned. Then apparently left (6:11 AM).Leader tape 6:21AM. During the interval (part of the interval is filed as Cut 3 of Atalotriccus polaris [LNS]) there is very little activity. During much of the time the few birds around were mostly in the peripheral (lek) area. AT ~6:17 there were none present at all.Birds started to return ~6:20/6:21. Voice comments about how they fly low. A number of additional voice comments, many important. Observations and recording ceased at 7:04AM. (Note: Many of the inactive periods edited out. Some filed as above indic., some as Cut #13 of Myiodynastes maculatus [LNS]; rest discarded.) Cut 5) (See notes on editing sheet). GRAPH (best so far?) ; 35-55: song, mainly 1(?) bird; 3:02-3:30 " , >1 bird; 3:45 - 4:11 " several; 4:18-4:45 " "; 5:30-5:45 " "; ojo! Note - [prev 4 lines] practically no "stalled motor" calls.; 6:25 - 6:48 song, several good for confusion of song by several birds; 11:20 - 11:50 "stalled motor" calls and some song.; 12:15 may be good for [recordist uses ditto marks to indicate same as above. I'm not clear if he meant the dittos to refer to "stalled motor" calls, some song, or both. mf]; 12:35-12:50 song several birds; 14:33-14:55 " " "; 15:10-15:18 " " ; See bird not displaying, too dark, but app. f and m she was next to some display and preening; 16:53-17:25 , 17:30-17:45, 18:35-18:55 } Good for confusion of song. All displaying m were facing female. Then, female flew; After she flew they faced in directin to where she flew; Then "another" female (or same in new perch) and males faced her...; good --> 20:15 - 20:40; ... now 2 females present; displaying males were "just about having fits". ~5:40 One female flew; other app. flew to lower perch; Note: Prob good for 1 bird 1:52 - 2:15 - song 1 bird; 2: 35 - 2:50 - song several birds; Good 2:58-6:05 (~) - song 1 bird; " 3:18-3:45 " " then several; Female sits quietly, calmly, app. paying no attention to displaying males.; 5:25-5:55 NOTE: calls, burps, song; 6:48-7:00.; A displaying male may suddenly leave perch and chase away another male 6-10m. away,+/- out of the group, and not pay attention to displaying males sitting close around him; 11:55-12:05 bit song by 1 bird; Good 14:50 -15:15 calls. and 1 bird song (bursts only);" " 15:55-16:02 calls; 58-65" calls and 1 bird song; Birds seem to perch in same spot; 2:12 -2:38 NOTE - some "good" calls in here; Good! -> 3:05-3:36 some good calls in here and song (~1bird); 4:02-4:33 (can now hear distant displaying birds); Birds app. begin booming (song) @ time see a bird flying in. But app. if not a f the song doesn't last. Birds moved out of lek to periphery. But when a bird starts to sing, others immed. fly back into lek and sing too; Note: When birds were in peripheral area and silent I tried pb and as soon as it "boomed" the birds all rushed back to lek, took their positions and started booming song. But this reaction was only after the first time I tried pb; afterwards it required persistent pb; 15:00 song; 14:25 "; 12:35 call;7:50-8:05; 10:40-11:10 song 1 bird, then 2 [] Note made in field 23/V/66 indicates that there were far less birds singing in this area that morning.

Close Title