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. 2018 Dec 19;285(1893):20182174. doi: 10.1098/rspb.2018.2174

Figure 3.

Figure 3.

Variation of migratory behaviour in individual bats recaptured in different years. The summer origin of individuals was identified based on measured stable isotope ratios in the non-exchangeable hydrogen of fur keratin (δ2Hf) for each capture event and individuals were assigned to two categories—long-distance migrant or regional—for the specific year. Assignments were listed for each recapture and years in which bats were absent from the hibernacula are indicated by ‘…’. The majority of common noctule bats (Nyctalus noctula) exhibited invariable migratory behaviour with either only regional (58) or migratory behaviour (10). Only 11 out of 79 individuals showed variable migratory behaviour.