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Table 1.

Presence of double-whistle calls in various populations of greater sage-grouse

LocationRecordingCalls with DW
Monument Lek (Lander, WY, USA) Krakauer and Patricelli, unarchived recording 16 
Alberta, Canada CLO acc. no. 59284 15 
Mono Basin, CA, USA Marc Dantzker, unarchived recording 
Colorado, USA Gordon Hempton, unarchived recording 12 
Oregon, USA CLO acc. no. 50119 35 
Oregon, USA CLO acc. no. 111166 
Saskatchewan, Canada CLO acc. no. 2385 
LocationRecordingCalls with DW
Monument Lek (Lander, WY, USA) Krakauer and Patricelli, unarchived recording 16 
Alberta, Canada CLO acc. no. 59284 15 
Mono Basin, CA, USA Marc Dantzker, unarchived recording 
Colorado, USA Gordon Hempton, unarchived recording 12 
Oregon, USA CLO acc. no. 50119 35 
Oregon, USA CLO acc. no. 111166 
Saskatchewan, Canada CLO acc. no. 2385 

Number of calling males is unknown. Each sample consists of the first 50 calls in which the whistle was clearly visible on the spectrogram and was not obviously overlapped by other vocalizations. The value for Monument Lek represents a count of 50 calls from a single channel recording taken from the multi-channel array. Since recording conditions varied across sites, these rates of double whistle (DW) detection are not accurate estimates of the rate of its occurrence

CLO=Macaulay Library at the Cornell Laboratory of Ornithology, Ithaca, NY,USA

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