“Our results show that the habitat has perches that are on average wider than for B. ventrale with a greater size range. The performance of B. pumilum was less impacted by perch diameter and pull direction suggesting that B. pumilum is able to use perches of different diameters in their more heterogeneous habitat.”…
https://academic.oup.com/biolinnean/article/143/3/blae003/7613321?login=false
https://academic.oup.com/biolinnean/article/143/3/blae003/7613321?login=false