Black grouse (Lyrurus tetrix) fighting in lek in a snowy bog

tetrao tetrix lyrurus tetrix lyrurus tetraonidae galliformes aves vertebrata boreal forest peat bog snow spring adult flap wings posing jump aggressiveness attack fight to profile shot overview pair one on one black grouse lyrurus tetrix lyrurus cock least concern iucn lc april lek mating arena snowflake nobody forest area freshwater wetland area solid precipitation precipitation 2 meteorological phenomenon atmosphere temperate season seasons stage of development individual locomotion motion behavior shot enumeration grouse tetras gallinacean bird wild animal tetraonidae galliformes aves vertebrata male low risk iucn lr iucn red list of threatened species species reproductive behaviour boreal forests north forest scandinavian forest scandinavian forests peat bogs boggy marsh boggy marshes snow covered snowy adults flapping wings flaps wings flutter posed pose settlings settling jumping action breaching jump up jumping up jumped jumps jumping aggressive assaulting assaulted assault attacked attacking aggressors aggressor attacks fighting disputed dispute disputing fighters fighter be in confrontation being in confrontation facing confrontation confrontations necking fights profile sights profile sight profile shots profile view profile views side view overviews global sight global sights full length duet pairs duets 2 two face to face black grouses lyrurus tetrix cocks rooster roosters least concern species snowflakes snow flakes snow flake with nobody tetrao tetrix lyrurus tetrix