Varying scale in number of observations. Multilayer networks based on a subset of observations (10–1,000 observations by steps of 10) of caribou social associations between April 2017 and March 2019 within 3 habitat layers (foraging, forest, and open). (A) Edge overlap increased for all habitat layers with increasing number of observations. Foraging and open layers had higher edge overlap than forest layers. (B) Graph strength within habitat layers with increasing number of observations showing individuals as a separate line and the mean of individuals in bold. Graph strength was highly variable at low number of observations (<100) for all habitat layers and relatively stable after approximately 200 observations. (C) Multidegree for all individuals increased with increasing number of observations. Individuals showed high variability (2–51) at the maximal number of observations (1,000).