Mating of Black Grouse on snow, Alps Switzerland

adult adults afrasia afro eurasia alps (range) atmosphere behavior behaviors bird birds black grouse (lyrurus tetrix) black grouses (lyrurus tetrix) continent continental area copulate copulating copulation copulations couple (to) coupled coupling coupling up couplings up cover (to) ecosystem ecosystems eurafrasia eurasia europe female females gallinacean gallinaceans general morphologies general morphology grouse (tetras) grouses (tetras) image and subject individual individuals iucn iucn red list of threatened species iucn status landmass landmasses lawn and alpine meadow lawn and alpine meadows least concern (iucn) lc least concern species lek mating arena living organism living organisms localisation localization location low risk (iucn) lr male males mating may meteorological phenomena meteorological phenomenon month of year months of year morphologies morphologies (zoology) morphology morphology (zoology) mountain mountains natural area natural areas nature old world organism organisms prealps (massif) prealps (mountain range) precipitation 2 profile shot profile shots profile sight profile sights profile view profile views recording recordings reproduction reproduction mode reproduction modes reproductions reproductive behavior reproductive behaviors reproductive behaviour reproductive behaviours seasons sexual dimorphism sexual dimorphisms sexual distinguishabilities sexual distinguishability sexual intercourse sexual intercourses sexual reproduction sexual reproductions shoting shotings side view snow snow covered snowy solid precipitation species spring stage of development switzerland temperate season temperate seasons tetrao tetrix time scale time scales uicn wattle wattles wild animal wild animals wild fauna wild faunae world mount and summit world mountain and summit world mountains and summits world mounts and summits