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(Nyctalus noctula) Identification: A large bat with uniform golden-brown shaggy fur. They have large forward-facing ears with a mushroom shaped tragus. They are very distinctive and cannot be confused with any other species.

General: A native species which likes to forage in fields and woodland. They are powerful, fast and high flying and emerge well before sunset and are often confused with swifts. Wingspan 32-40cm Their early Weight: 18-40g emergence does MH Lifespan: Max. 12 years make them susceptible to dayflying predators. They feed on large insects such as beetles and moths. Mating takes place in the autumn. A single pup is born in late spring in small maternal roosts consisting of a handful of females and is weaned after 6 weeks. They are mainly a tree roosting species but occasionally use other sites such as bat boxes and buildings. They hibernate, mostly in trees roosts, tolerating temperatures well below freezing. Noctules are often active during winter if conditions are suitable. Distribution - UK: There are approx.50000 noctules distributed widely throughout England and Wales as well as southern Scotland. The population is stable. Sonogram

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Cambridgeshire Mammal Atlas  
Cambridgeshire Mammal Atlas