Tetrastes bonasia
The Hazel Grouse, *Tetrastes bonasia*, is a strikingly cryptic yet beautiful denizen of dense boreal and mixed forests across Eurasia. Measuring approximately 35-39 cm (14-15 inches) in length with a wingspan of 48-54 cm (19-21 inches) and weighing 300-500 grams (10.5-17.5 oz), its plumage is a masterful blend of grey, brown, black, and white markings, providing superb camouflage against forest litter and tree bark. Key identification marks include a short, erectile crest, a distinctive black...
Inhabits dense, mature coniferous and mixed forests, particularly those with a rich understory of shrubs, often near streams or wetlands, from lowlands up to subalpine elevations.
Primarily herbivorous, consuming buds, catkins (especially alder and birch), leaves, berries, and seeds, supplemented with insects during the warmer months, foraging both on the ground and in trees.
Hazel Grouse are typically crepuscular, most active during dawn and dusk, spending much of their day foraging on the forest floor or perching cryptically in trees, often roosting in snow burrows during winter. Their foraging strategy involves pecking at buds, catkins, leaves, berries, and insects...
The Hazel Grouse boasts a vast, continuous breeding range stretching across the entire Palaearctic region, from Scandinavia and Eastern Europe eastward through Russia, Siberia, Kazakhstan, Mongolia, and northern China, extending into the Korean Peninsula and northern Japan. In Europe, populations...
Least Concern
- The Hazel Grouse is one of the most elusive gamebirds, often only detected by its distinctive "whistle-song" or sudden, explosive flush. - During harsh winters, they can survive on a diet almost exclusively of birch and alder catkins, showcasing remarkable dietary adaptability. - Males have a u...