ML 63761

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Baird's Sandpiper -- Calidris bairdii More
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William W. H. Gunn
10 Jul 1977 at 00:00

    Geography
  • Canada
    Nunavut
    Locality
  • Melville Island; Bridport Inlet
    Habitats
  • Pond
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NOTES: calls and parts of display2 adults giving 3 types of calls in vicinity of nest or yg. (Recorded at start at high level)(one given while I was stationary, one while I'm moving and one in flight?)On vegetated quite wet slope at west end of Inlet. Annct 6.57 2nd bird after 7.40 female?Also: stream running different note higher-pitched call-notes; Rain on reflector after 9.20 wind after 12.00Q 2, 2-3, 2[An exceptionally long recording with several call types. Begins with three "Laugh" Calls (two at 0:14, one at 0:18). After this there are several "Trilled Alarm Calls" ("Prreep") followed by additional "Laugh" Calls. At 2:48 and 2:50 are two chatters, the first following what appear to be incomplete "Songs." These are followed by many good "Laugh" Calls (mostly single-element, but some two-element, especially where noted below), with a few "Trilled Alarm Calls interspersed (3:00-6:04, 6:10-6:40, 6:42-7:06 (two-element "Laugh" Calls), 8:28-8:39, 10:27-10:41, 10:47-11:26, 11:40-11:51, 12:38-13:06, 14:03-14:31, 14:42-14:50, 15:55-16:08 (two-element), 18:44-19:19 (probably the BEST part of this recording), 19:25-20:14, 20:37-21:06, 27:12-27:41, 28:06-28:18 (the last call in this set is an unusual twitter), 28:36-28:54, and 30:08-30:44). Many of the apparent "Laugh" calls are doubled and of short duration, suggesting that they may instead represent the "Co-it co-it" call described in BNA account. If this is the case, there seems to be a smooth transition from one of these call-types into the other. There is a good clip with a variety of calls between 12:19 and 12:24 ("Laugh" and two different types of "Chatter"), and there are clean sets of "Trilled Alarm Calls" (2:44-2:48 and 24:13-24:32), but most of them are overloaded in the digitized copy. The call at 28:165 appears to represent the "cheerleet" described in BNA account (though it is totally unlike the sample spectrogram pictured for this vocalization [??]). A call given at 15:37 is different from any encountered to this point or described in the references below. I suspect that the soft "peer" calls scattered throughout this recording (e.g., 0:17 and between "Laugh" Calls - 18:56-19:14) were given by Calcarius lapponicus or Plectrophenax nivalis rather than Calidris bairdii. NOTE: many calls in this recording are OVERLOADED, this possibly occurring during the copy process. Check original field tapes!! Terminology follows Miller et al. (1988. Ornis Scandinavica 19: 257-267) and BNA Account. Quality added (2-3, 2) - CAM - 22 February 2005]

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