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A Re-Evaluation Of Hotspot Settlement In Lekking Sage Grouse, Robert M. Gibson
A Re-Evaluation Of Hotspot Settlement In Lekking Sage Grouse, Robert M. Gibson
School of Biological Sciences: Faculty Publications
Recent analyses of avian leks have come to conflicting conclusions concerning the role of male settlement on female traffic hotspots. This issue was re-examined in the sage grouse, Centrocercus urophasianus, using data on prenesting movements of radio-tagged females and the dispersion of lekking males collected during a 10-year field study. As expected with hotspot settlement, leks were preferentially located in areas through which females traveled between wintering and nesting ranges before mating. In addition, the distribution of males among leks was related proximately to variation in numbers of females visiting each lek during the mating period and ultimately to …
Female Choice In Sage Grouse: The Roles Of Attraction And Active Comparison, Robert M. Gibson
Female Choice In Sage Grouse: The Roles Of Attraction And Active Comparison, Robert M. Gibson
School of Biological Sciences: Faculty Publications
Previous studies of female choice in sage grouse Centrocercus urophasianus have implicated both the acoustic quality and repetition rate of the stereotyped strut display as putative cues for female choice. Stages in the choice process at which specific components of male courtship display influence female decisions were investigated using field observations of female premating behavior. Females visited a subset of territorial males and then actively chose one of these as a mate. The order in which males were visited suggested that females searched until an acceptable mate was found, rather than employing a “best-of-n” tactic. Numbers of females visiting a …