Tetrao urogallus
The Western Capercaillie, *Tetrao urogallus*, stands as the largest and most magnificent member of the grouse family, captivating naturalists with its imposing size and elaborate courtship rituals. Adult males are strikingly large, measuring 60-90 cm in length with a wingspan of 1.2-1.25 meters and weighing between 4 to 6.5 kg, adorned with iridescent dark metallic blue-green plumage, reddish-brown wings, and distinctive crimson 'roses' (combs) above their eyes. Their fanned tails and promine...
This majestic gamebird primarily inhabits old-growth coniferous or mixed forests, preferring areas with dense tree cover interspersed with small clearings, rich undergrowth of bilberry, and suitable roosting trees. It can be found from sea level in Scandinavia up to elevations of 2000 meters in m...
Their diet shifts seasonally, primarily consisting of conifer needles (especially pine and spruce) and buds during winter, supplemented by bilberry and lingonberry shoots and berries in warmer months. Chicks rely heavily on protein-rich insects for rapid growth.
Western Capercaillie are generally diurnal, though males become particularly active at dawn and dusk during the breeding season. They often roost high in trees overnight, particularly in winter. Foraging primarily occurs on the ground, where they glean berries, leaves, and insects, and in trees, ...
The Western Capercaillie boasts a widespread, though fragmented, Palearctic distribution across Eurasia. Its breeding range spans from Scandinavia, through the Baltic states, Belarus, and Russia, extending deep into Siberia. Isolated, relict populations can also be found in Central European mount...
Least Concern
- The Western Capercaillie is the largest grouse species in the world, with males weighing up to 6.5 kilograms. - Its scientific name, *Tetrao urogallus*, is derived from Greek and Latin, meaning 'four-winged' (referring to its powerful flight) and 'forest rooster'. - Male Capercaillies engage in...