Eversden and Wimpole Woods

Site of Special Scientific Interest · 52.1577, -0.0362

Also within

Cambridgeshire County

Condition (Natural England)

Favourable (2) Unfavourable Recovering (1)
UnitFeatureConditionArea (ha)Assessed
TL334525 Favourable 26.49 2010-01-28
TL343522 Favourable 26.49 2010-01-28
TL344530 Unfavourable Recovering 39.71 2010-12-18

Geology & landscape

Rock Type: Glacial Till

Landscape processes: Glacial

Description

Area, 66.48 hectares Description Eversden Wood is an important ancient semi natural woodland of a type now localised in extent and rare in lowland England. The habitats present also support a nationally important summer maternity roost for the barbastelle bat, Barbastella barbastellus. General description The site is located close to Wimpole Park and comprises a mixture of ancient coppice woodland Eversden Wood and high forest woods likely to be of more recent origin Wimpole Woods. A colony of barbastelle bats use trees as roosts in Wimpole Woods. These trees are used as a summer maternity roost where the female bats gather to give birth and rear their young. Most of the roost sites are within tree crevices. The bats also use the site as a foraging area. Some of the woodland is also used as a flight path when bats forage outside the site. A total of six bat species have been recorded at this site, the other species being the pipstrelles Pipistrellus pygmaeus and P. pipistrellus, brown long eared Plecotus auritus, Natterer’s Myotis nattereri and noctule Nyctalus noctula. Eversden Wood is a species rich example of ancient ash Fraxinus excelsior field maple Acer campestre dog’s mercury Mercurialis perennis woodland and one of the largest remaining sites of this type on the Cambridgeshire chalky boulder clay. The woodland is predominantly relict coppice of ash and field maple over an understorey of hazel Corylus avellana, with aspen Populus tremula, birch Betula sp and small leaved elm Ulmus minor also locally dominant. The ground flora is characterised by dog’s mercury and bluebell Hyacinthoides non-scripta and the damp soil conditions are reflected in the local abundance of associated plants such as meadowsweet Filipendula ulmaria and tufted hair grass Deschampsia cespitosa. Many herbs typical of old woodlands are present including yellow archangel Lamiastrum galeobdolon, wood anemone Anemone nemorosa and the nationally scarce oxlip Primula elatior; a species largely confined to damp chalky boulder clay woods of eastern England. Other locally uncommon plants represented include herb paris Paris quadrifolia, and, particularly on the drier wood banks, pignut Conopodium majus and hairy wood rush Luzula pilosa. The woodland rides provide additional habitat diversity and support herbs such as ragged-robin Silene flos-cuculi and false fox sedge Carex otrubae. Other information The site has been extended to include important woodland roosting and foraging habitat of the barbastelle bat, a very rare species in the UK. All species of bat are listed in Schedule 5 of the Wildlife and Countryside Act 1981 as amended and Annex of the European Community Habitats and Species Directive. The site is within the West Anglian Plain Natural Area. Note, * refers to Eversden Wood only.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
barbastelle bat Barbastella barbastellus VU bat vespertillonidae
Natterer's bat Myotis nattereri LC bat vespertillonidae
noctule bat Nyctalus noctula LC bat vespertillonidae
Soprano pipistrelle bat Pipistrellus pygmaeus LC bat vespertillonidae
brown long-eared bat Plecotus auritus LC bat vespertillonidae
tufted hair grass Deschampsia cespitosa LC grass poaceae
wood anemone Anemone nemorosa LC herb ranunculaceae
pignut Conopodium majus LC herb apiaceae
meadow sweet Filipendula ulmaria LC herb rosaceae
bluebell Hyacinthoides non-scripta LC herb liliaceae
yellow archangel Lamiastrum galeobdolon LC herb lamiaceae
dog's mercury Mercurialis perennis LC herb euphorbiaceae
herb paris Paris quadrifolia VU herb melanthiaceae
oxlip Primula elatior LC herb primulaceae
ragged-robin Silene flos-cuculi LC herb carophyllaceae
hairy wood-rush Luzula pilosa LC rush juncaceae
false fox sedge Carex otrubae LC sedge cyperaceae
field maple Acer campestre LC tree aceraceae
hazel Corylus avellana LC tree corylaceae
ash Fraxinus excelsior LC tree oleaceae
aspen Populus tremula LC tree salicaceae
small leaved elm Ulmus minor LC tree ulmaceae

Insects to look out for

These moths, butterflies and beetles are known to feed on plants recorded at this site, and carry a notable UK conservation status — but a host-plant being present doesn't mean the insect has actually been recorded here. Treat this as "worth watching for," not a confirmed sighting.

SpeciesStatusVia host-plant
Dark bordered beauty
Epione vespertaria
Endangered Populus tremula
Maple pug
Eupithecia inturbata
Endangered Acer campestre
Scarce vapourer
Orgyia recens
Endangered Corylus avellana, Filipendula ulmaria, Ulmus spp.
White-letter hairstreak
Satyrium w-album
Endangered Ulmus spp.
The sprawler
Asteroscopus sphinx
Vulnerable Corylus avellana, Fraxinus excelsior, Populus spp., Ulmus spp.
Broom moth
Ceramica pisi
Vulnerable Ulmus spp.
Scarce chocolate-tip
Clostera anachoreta
Vulnerable Populus spp., Populus tremula
Mottled umber
Erannis defoliaria
Vulnerable Acer campestre, Corylus avellana, Populus tremula, Ulmus spp.
Satyr pug
Eupithecia satyrata
Vulnerable Filipendula ulmaria
Grayling
Hipparchia semele
Vulnerable Deschampsia cespitosa
The lackey
Malacosoma neustria
Vulnerable Corylus avellana, Ulmus spp.
Pale brindled
Phigalia pilosaria
Vulnerable Corylus avellana, Fraxinus excelsior, Populus spp.
The anomalous
Stilbia anomala
Vulnerable Deschampsia cespitosa
Pale eggar
Trichiura crataegi
Vulnerable Corylus avellana, Populus spp.
No common name
Zeugophora turneri
Vulnerable Populus tremula
Flounced chestnut
Agrochola helvola
Near Threatened Ulmus spp.
Purple emperor
Apatura iris
Near Threatened Populus tremula
Minor shoulder-knot
Brachylomia viminalis
Near Threatened Populus tremula
The sallow
Cirrhia icteritia
Near Threatened Populus spp.
Large thorn
Ennomos autumnaria
Near Threatened Corylus avellana, Populus spp., Ulmus spp.
Dusky thorn
Ennomos fuscantaria
Near Threatened Fraxinus excelsior
Autumnal rustic
Eugnorisma glareosa
Near Threatened Hyacinthoides non-scripta
Grey pug
Eupithecia subfuscata
Near Threatened Populus tremula
Double dart
Graphiphora augur
Near Threatened Ulmus spp.

Host-plant data: Cook et al. (2025), Traits data for the butterflies and macro-moths of Great Britain and Ireland, 2024, UK Centre for Ecology & Hydrology / Butterfly Conservation; and Padovani et al. (2020), Database of Insects and their Food Plants (DBIF), UK Centre for Ecology & Hydrology (both Open Government Licence). Contains data supplied by UK Centre for Ecology & Hydrology.