Western capercaillie (Tetrao urogallus() illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326015/premium-illustration-psd-tetrao-urogallus-america-ancientView licenseWestern capercaillie (TETRAO UROGALLUS) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326148/premium-illustration-psd-tetrao-urogallus-vintage-grouse-americaView licenseHybrid between Western capercaillie and Willow ptarmigan ♂ (Tetrao urogallus x lagopus lagopus) illustrated by the von… https://www.rawpixel.com/image/326212/premium-illustration-psd-america-ancient-animalView licenseHybrid between black grouse and western capercaillie (Lyrurus tetrix ♂ x Tetrao urogallus ♀) illustrated by the von Wright… https://www.rawpixel.com/image/325668/premium-illustration-psd-vintage-wood-texture-america-ancientView licenseWestern Capercaillie (Tetrao Urogallus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326021/premium-illustration-psd-von-wright-brothers-america-ancientView license