Habitat characteristics of Capercaillie Tetrao urogallus display grounds in southeastern Norway

摘要: Habitat composition of 39 capercaillie Tetrao urogallus display grounds was compared with available and unused habitats in two coniferous forest areas southeastern Norway. Macro-habitat described respect to successional stage topography. Micro-habitat microtopography, plant association, stand structure. Totally, 28 variables were measured. A pronounced macro-habitat preference found for elevated forests older than 60-70 years. Micro–habitat varied considerably. However, a slight but significant heterogeneous, open-spaced understory, visibility more 30 m. Suitable micro-habitats abundant, distribution mainly limited by characteristics, i.e. elevated, old areas.