Fig. 2
From: Scatter-hoarding birds disperse seeds to sites unfavorable for plant regeneration
Differences between a visit duration, b area, c overlap with pine forest cover and d) elevation of spotted nutcracker caching and harvesting sites. Boxes indicate the 25% and 75% quartiles, black line indicates the median. Whiskers extend to the highest value that is within 1.5 × the interquartile range. Grey background color in d) indicates elevational range (1850–2150 m a.s.l.) of Swiss stone pines in the study area