Fig. 1From: Mature stand developmental stage has ceased to constitute the most suitable habitat for the capercaillie in the Augustów Forest, PolandStudy areas in the Augustów Forest (North-Eastern Poland). Black points – active Key Areas around leks, open points – abandoned Key Areas around leks. The area of the whole square is ca. 4 km2. The measurements were conducted on circular plots (r = 15 m radius, located across a 200 m × 200 m grid)Back to article page