ML 61891

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Say's Phoebe -- Sayornis saya More
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Prairie Falcon -- Falco mexicanus

William W. H. Gunn
16 May 1961 at 00:00

    Geography
  • Canada
    Saskatchewan
    Locality
  • S of Bengough; Big Muddy Valley
No locations found with lat/long
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NOTES: Male singing from perch on top of shrub at foot of cliff below eyrie and later singing from top of cliff. Background noise: wind.

[This is the Primary Song of the species (sensu BNA) combining the fully peaked form of the Initially Peaked Vocalization (IPV) with type 1 and type 2 Regularly Repeated Vocalizations (RR1s, RR2s). See Figure 1c of Smith (1970a. Song-like displays in Sayornis species. Behaviour 37:64-84) for RRVs and Figure 1 of Smith (1970b. Displays and message assortment in Sayornis species. Behaviour 37: 85-112) for IPVs. Note that the BNA account appears to have confused the IPVs with RR1s and the RR1s with RR2s. Typical of the species, the vast majority of the 33 vocalizations here represent IPVs, but with three RR1s (0:22, 0:285, 1:1015), and two RR2s (0:27, 0:395). Quality changed from 2-3 to 2, 2-3 (hiss is bad and other birds are calling but some parts are okay) - 5 April 2005]

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