Annex
London Bat Audit
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Species |
UK Status |
London Status |
Notes |
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Greater horseshoe bat |
Rhinolophus ferrumequinum |
Endangered
BAP Priority |
Extinct |
Last Greater London record from Oxleas Wood in 1953.
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Lesser horseshoe bat |
Rhinolophus hipposideros |
Endangered
BAP Priority |
Extinct |
Last Greater London record from Abbey Wood (Woolwich) in 1952-3.
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Whiskered bat |
Myotis mystacinus |
Vulnerable |
Rare
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Due to difficulty in separation, these are considered together. Occur rarely and in low numbers in outer London Boroughs such as Hillingdon, Richmond, Bexley and Bromley. One current known (winter) roost only. |
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Brandt's bat |
Myotis brandtii |
Vulnerable |
Rare
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Natterer's bat |
Myotis nattereri |
Vulnerable |
Scarce |
Still relatively few records in Greater London. Most central locations are Highgate Wood and Hampstead Heath, otherwise Richmond and Hounslow and occasionally other outer London Boroughs. 8 current known roosts (mostly winter).
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Daubenton's bat |
Myotis daubentoni |
Not Threatened |
Locally frequent but declining |
Relatively widespread and strongly associated with ponds, lakes & rivers. Occasional summer roosts have been found in trees on Wimbledon Common and in Ruislip Woods. Contrary to the national trend, this species is apparently declining in London and its sensitivity to increasing ambient light levels is a possible reason. 4 current known winter roosts.
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Serotine |
Eptesicus serotinus |
Vulnerable |
Rare; has declined |
Serotines are found in outer London Boroughs, especially Bromley, Havering, Sutton and Richmond. 2 current known summer roosts, in Bromley and Teddington.
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Noctule |
Nyctalus noctula |
Vulnerable; declining
BAP Priority |
Widespread but declining |
The status of this large, wide-ranging bat is difficult to assess, but the past two decades have seen a rapid decline in the species and this mirrors the national trend. An exclusively tree-roosting bat; current known roosts number <10 London-wide.
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Leisler's bat |
Nyctalus leisleri |
Vulnerable |
Scarce |
Leisler's bat has been recorded infrequently in London area, yet sightings have doubled in the last three years. New foraging sites for the species include the Barnes area, Wandsworth Common and Brent Reservoir. 3 current known roosts (Haringey, Bromley and Bexley).
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Common pipistrelle |
Pipistrellus pipistrellus
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Not Threatened |
Common |
A widespread species, the common pipistrelle is believed to occur in all London boroughs. Roosts are still discovered relatively infrequently, however.
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Soprano pipistrelle
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Pipistrellus pygmaeus |
BAP Priority |
Common |
Also widespread and probably London’s commonest bat. Apparently more associated with wetland habitats than its close relative, P. pipistrellus. Known roosts currently number 15-25?, but many more pass undetected.
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Nathusius's pipistrelle |
Pipistrellus nathusii |
Rare |
Rare |
Only recently confirmed as a UK breeding species. Detector records from an increasing list of sites include Lesnes Abbey Woods, Chislehurst Ponds and the Wetland Centre at Barnes. 1 known current roost site in bat boxes in Hounslow. |
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Brown long-eared bat |
Plecotus auritus |
Declining
BAP Priority |
Scarce |
Brown long-eared bats are fairly secretive and may be under-recorded in Greater London, although reasons for the national decline are also likely to affect London’s population. Roosts have been found in Bexley, Bromley, Hillingdon, Wandsworth, Kensington & Chelsea, Barnet, and Richmond. |
Data Limitations
This audit is based on data from the London Bat Project collected in the mid-1980s, as well as that collected since by the London Bat Group and is therefore not systematic. This audit is the best possible understanding of the status of bats in London that can currently be realised by the London Bat Group.
In general, every borough will have bats present, as even in the inner boroughs there are usually some areas of suitable habitat that can provide feeding habitat for small numbers of at least the soprano and common pipistrelles. In general, the outer boroughs with larger areas of more suitable habitat should be expected to have higher numbers of bats and a greater diversity of species.
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