Traditional mammalian overwintering strategies emphasize energy storage via fat accumulation coupled with hibernation or migration. However, niche exploitation may enable alternative strategies that circumvent reliance on lipid reserves. Here, we report a novel overwintering paradigm in the Rhinolophus macrotis group, a clade of auditory‐specialized bats characterized by low‐frequency echolocation and enlarged external ears (p...

Predator–prey interactions are important but difficult to study in the field. Therefore, laboratory studies are often used to examine the outcomes of predator–prey interactions. Previous laboratory studies have shown that moth hearing and ultrasound production can help prey avoid being eaten by bats. We report here that laboratory behavioural outcomes may not accurately reflect the outcomes of field bat–moth interactions. We t...

Niche expansion and shifts are involved in the response and adaptation to environmental changes. However, it is unclear how niche breadth evolves and changes toward higher‐quality resources. Myotis pilosus is both an insectivore and a piscivore. We examined the dietary composition and seasonality in M . pilosus and the closely related Myotis fimbriatus using next‐generation DNA sequencing. We tested whether resource variation...