Perry Woods

Site of Special Scientific Interest · 52.2849, -0.3398

Also within

Cambridgeshire County

Condition (Natural England)

Favourable (2) Unfavourable Recovering (1)
UnitFeatureConditionArea (ha)Assessed
TL133664 Favourable 41.87 2012-07-15
TL138662 Favourable 10.71 2012-07-15
TL142666 Unfavourable Recovering 15.36 2012-11-27

Description

Description The site is of the ash maple ancient woodland type characteristic of the heavy Oxford and Boulder Clays. It represents a habitat type which has become increasingly scarce in the county and over its natural range in lowland England. The dominant tree community is of mixed coppice of ash Fraxinus excelsior, hazel Corylus avellan and field maple Acer campestre with frequent standards of pedunculate oak Quercus robur. The ground flora is of a richness typical of ancient woodlands. Old woodland ‘indicators’ present includewood melick Melica uniflora and early purple orchid Orchis mascula. The dominant field layer plants are of the characteristic dog’s mercury Mercurialis perennis bluebell Hyacinthoides non-scripta type. Additional valuable habitats are provided by the shrubby woodland fringes, the system of rides, streams and an adjacent area of grassland which holds plants such as cowslip Primula veris and salad burnet Poterium sanguisorba. Such adjacent grassland strips enhance the value of the woodland edges as habitats for invertebrates in particular.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
wood melick Melica uniflora NT grass poaceae
bluebell Hyacinthoides non-scripta LC herb liliaceae
dog's mercury Mercurialis perennis LC herb euphorbiaceae
early purple orchid Orchis mascula LC herb orchidaceae
salad burnet Poterium sanguisorba VU herb rosaceae
cowslip Primula veris LC herb primulaceae
field maple Acer campestre LC tree aceraceae
ash Fraxinus excelsior LC tree oleaceae
common oak Quercus robur LC tree fagaceae

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
Oak lutestring
Cymatophorina diluta
Endangered Quercus robur
Maple pug
Eupithecia inturbata
Endangered Acer campestre
Duke of Burgundy
Hamearis lucina
Endangered Primula veris
Scarce vapourer
Orgyia recens
Endangered Quercus spp.
Mouse moth
Amphipyra tragopoginis
Vulnerable Poterium sanguisorba
The sprawler
Asteroscopus sphinx
Vulnerable Fraxinus excelsior, Quercus spp.
Mottled umber
Erannis defoliaria
Vulnerable Acer campestre, Quercus spp.
The lackey
Malacosoma neustria
Vulnerable Quercus spp.
Pale brindled
Phigalia pilosaria
Vulnerable Fraxinus excelsior, Quercus spp.
Grizzled skipper
Pyrgus malvae
Vulnerable Poterium sanguisorba
Early moth
Theria primaria
Vulnerable Quercus spp.
Pale eggar
Trichiura crataegi
Vulnerable Quercus spp.
Oak hook-tip
Watsonalla binaria
Vulnerable Quercus robur
Flounced chestnut
Agrochola helvola
Near Threatened Quercus spp.
Light crimson underwing
Catocala promissa
Near Threatened Quercus robur
Dark crimson underwing
Catocala sponsa
Near Threatened Quercus robur
Heart moth
Dicycla oo
Near Threatened Quercus robur
Large thorn
Ennomos autumnaria
Near Threatened Quercus spp.
September thorn
Ennomos erosaria
Near Threatened Quercus spp.
Dusky thorn
Ennomos fuscantaria
Near Threatened Fraxinus excelsior
Autumnal rustic
Eugnorisma glareosa
Near Threatened Hyacinthoides non-scripta
Double dart
Graphiphora augur
Near Threatened Quercus spp.
Clay fan-foot
Paracolax tristalis
Near Threatened Quercus spp.
Common fan-foot
Pechipogo strigilata
Near Threatened Quercus robur
Frosted green
Polyploca ridens
Near Threatened Quercus robur

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.