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Serotine vs Big Brown Bat

Serotine
VS
Big Brown Bat

The serotine of Europe and the big brown bat of North America are close relatives in the genus Eptesicus, both large, robust bats that roost in buildings and eat big beetles.

Serotine Big Brown Bat
Scientific name Eptesicus serotinus Eptesicus fuscus
Relationship A European member of the same genus as the big brown bat A North American member of the same genus as the serotine
Range Farmland, parkland, and woodland edges across Europe and much of temperate Asia Forest and grassland across North America, from southern Canada through the United States and into Mexico
Diet Large beetles such as dung beetles and cockchafers, as well as moths and flies Beetles, moths, and other flying insects, with a fondness for hard-shelled beetles
Roost Summer colonies in the roof spaces of buildings Attics, barns, bridges, caves, hollow trees, and rock crevices
Winter Hibernates in sheltered sites, often hidden in buildings or caves Hibernates in caves, mines, or occasionally buildings, in cold, stable locations
Disease resilience Not specifically documented More resistant to white-nose syndrome than several smaller bat relatives
Conservation status Least Concern, with a stable population Least Concern, with a stable population

Serotine vs Big Brown Bat: common questions

Are the serotine and big brown bat related?

Yes, both belong to the genus Eptesicus, one in Europe and Asia and the other in North America.

What do they eat?

Both eat large beetles, with the serotine favouring dung beetles and cockchafers and the big brown bat favouring hard-shelled beetles.

Where do the serotine and big brown bat live?

The serotine lives across Europe and much of temperate Asia, while the big brown bat lives across North America from southern Canada into Mexico.

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