Each forest stand contained four bird survey plots (plot 1: 0–30 m; plot 2: 60–90 m; plot 3: 120–150 m; plot 4: 180–210 m) with a plot size of 30 60 m (width length) (Fig. A.1 in Supporting information).
Each forest stand contained four bird surveyplots (plot 1: 0–30 m; plot 2: 60–90 m; plot 3: 120–150 m; plot 4:180–210 m) with a plot size of 30 60 m (width length) (Fig. A.1in Supporting information).