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Fenotypové charakteristiky a úspěšnost párování koroptve polní \kur{(Perdix perdix)} / Phenotypic traits and pairing success of the Grey Partridge \kur{(Perdix perdix)}BLAŽKOVÁ, Pavla January 2009 (has links)
The master thesis works measures of phenotypic traits and unique data of pairing of wild living grey partridges. The secondary sexual traits and theirs variability is described. Especially the relationship between the ornamental traits and the pairing success was researched. The results proved the greater pairing success of males with the larger melanin breast patch and the greater quality of the mate in females with the larger breast patch. The strategy of male floaters, which are realatively well ornamented is discussed.
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Impacts of group selection harvest openings on the reproductive success of the Solitary Vireo (Vireo solitarius alticola)Meehan, Amy L. 01 October 2008 (has links)
Solitary Vireos (Vireo solitarius alticola) were studied on an extensive mature forest landscape in 1994 and on three sites harvested using the group selection method in 1995. Pairing success was 88% on the unharvested site in 1994, however it was lower on the harvested sites in 1995 (53.8%). Low reproductive success was observed in both years (12% and 22% respectively). In 1995, the amount of opening within a 200 meter radius of the first observation point of a male was positively related to pairing success (p<0.05). This suggests that females may be cueing in on the increased number of shrubs in and around openings. / Master of Science
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