Removal and replacement of male blue grouse on persistent and transient territorial sites.
D000818:Animals; D001717:Birds / Q000502:physiology*; D001835:Body Weight; D001947:Breeding; D008297:Male; D009929:Organ Size; D012621:Seasons; D013091:Spermatogenesis; D013731:Territoriality; D013737:Testis / Q000502:physiology