Eaglehead and Bloodstone Copses

Site of Special Scientific Interest · 50.6858, -1.1765

Condition (Natural England)

Favourable (2) Unfavourable Recovering (2)
UnitFeatureConditionArea (ha)Assessed
SZ580875 Favourable 4.27 2009-03-30
SZ583877 Favourable 2.06 2009-03-05
SZ584877 Unfavourable Recovering 2.91 2014-03-10
SZ585876 Unfavourable Recovering 0.8 2006-09-06

Geology & landscape

Rock Type: Chalk

Description

Area, 10.33 hectares Description Eaglehead and Bloodstone Copses cover steep north and west facing chalk slopes. Above the junction of the two copses is a small, steeply sloping area of chalk grassland. The woodland represents one of the best examples of dry calcareous ash maple woodland over chalk on the Isle of Wight and displays an interesting woodland flora characteristic of ancient chalk woods. The chalk grassland associated with the woodland is rich in downland species. The tree canopy over much of Eaglehead and Bloodstone Copses is dominated by very large, well spaced ash Fraxinus excelsior with intervening younger ash derived from huge old coppice stools. In places the canopy is diversified by pedunculate oak Quercus robur, sycamore Acer pseudoplatanus and a stand of wych elm Ulmus glabra where a small spring rises at the base of Bloodstone Copse. The shrub layer is composed of hazel Corylus avellana and field maple Acer campestre coppice with a variety of calcicole shrubs such as spindle Euonymus europaeus and wayfaring tree Viburnum lantana. The dense shade shed by the canopy and shrub layer has suppressed the ground flora which is dominated by the shade tolerant dog’s mercury Mercurialis perennis and includes the rare toothwort Lathraea squamaria and bird’s nest orchid Neottia nidus-avis, both species characteristic of derelict hazel coppice on chalk. The chalk grassland that borders the south of the wood, on steep north facing ground, consists of rather tall upgrazed grassland dominated by red fescue Festuca rubra and glaucous sedge Carex flacca and includes oxeye daisy Leucanthemum vulgare, knapweed Centaurea nigra, bird’s foot trefoil Lotus corniculatus, cowslip Primula veris and autumn gentian Gentianella amarella. This grassland is rich in butterflies including an important colony of the rare Duke of Burgundy fritillary Hamearis lucina one of only three known Isle of Wight locations and the chalkhill blue Polyommatus coridon.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
Duke of Burgundy Hamearis lucina VU butterfly riodinidae
chalkhill blue Polyommatus coridon VU butterfly lycaenidae
red fescue Festuca rubra LC grass poaceae
black knapweed Centaurea nigra LC herb asteraceae
autumn gentian Gentianella amarella LC herb gentianaceae
toothwort Lathraea squamaria LC herb orobanchaceae
oxeye daisy Leucanthemum vulgare LC herb asteraceae
birdsfoot trefoil Lotus corniculatus LC herb fabaceae
dog's mercury Mercurialis perennis LC herb euphorbiaceae
birdsnest orchid Neottia nidus-avis VU herb orchidaceae
cowslip Primula veris LC herb primulaceae
glaucus sedge Carex flacca LC sedge cyperaceae
spindle tree Euonymus europaeus LC shrub celastraceae
wayfaring tree Viburnum lantana LC shrub caprifoliaceae
field maple Acer campestre LC tree aceraceae
sycamore Acer pseudoplatanus Not listed in GB list tree aceraceae
hazel Corylus avellana LC tree corylaceae
ash Fraxinus excelsior LC tree oleaceae
common oak Quercus robur LC tree fagaceae
wych elm Ulmus glabra 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
Black-veined moth
Siona lineata
Critically Endangered Centaurea nigra, Lotus corniculatus
New forest
Zygaena viciae
Critically Endangered Lotus corniculatus
Straw belle
Aspitates gilvaria
Endangered Lotus corniculatus
Oak lutestring
Cymatophorina diluta
Endangered Quercus robur
Maple pug
Eupithecia inturbata
Endangered Acer campestre
Duke of Burgundy
Hamearis lucina
Endangered Primula veris
Wood white
Leptidea sinapis
Endangered Lotus corniculatus
Scarce vapourer
Orgyia recens
Endangered Corylus avellana, Quercus spp., Ulmus spp.
Least minor
Photedes captiuncula
Endangered Carex flacca
White-letter hairstreak
Satyrium w-album
Endangered Ulmus glabra, Ulmus spp.
Slender scotch
Zygaena loti
Endangered Lotus corniculatus
Mouse moth
Amphipyra tragopoginis
Vulnerable Lotus corniculatus
The sprawler
Asteroscopus sphinx
Vulnerable Corylus avellana, Fraxinus excelsior, Quercus spp., Ulmus spp., Viburnum lantana
Broom moth
Ceramica pisi
Vulnerable Ulmus spp.
Mottled umber
Erannis defoliaria
Vulnerable Acer campestre, Acer pseudoplatanus, Corylus avellana, Quercus spp., Ulmus spp.
Dingy skipper
Erynnis tages
Vulnerable Lotus corniculatus
Satyr pug
Eupithecia satyrata
Vulnerable Centaurea spp.
Grayling
Hipparchia semele
Vulnerable Festuca rubra
The lackey
Malacosoma neustria
Vulnerable Corylus avellana, Quercus spp., Ulmus spp.
Pale brindled
Phigalia pilosaria
Vulnerable Corylus avellana, Fraxinus excelsior, Quercus spp., Ulmus glabra
Silver studded blue
Plebejus argus
Vulnerable Lotus corniculatus
Early moth
Theria primaria
Vulnerable Quercus spp.
Pale eggar
Trichiura crataegi
Vulnerable Corylus avellana, Quercus spp.
Oak hook-tip
Watsonalla binaria
Vulnerable Quercus robur
Flounced chestnut
Agrochola helvola
Near Threatened Quercus spp., Ulmus spp.
Light crimson underwing
Catocala promissa
Near Threatened Quercus robur
Dark crimson underwing
Catocala sponsa
Near Threatened Quercus robur
Dusky-lemon sallow
Cirrhia gilvago
Near Threatened Ulmus glabra
The sallow
Cirrhia icteritia
Near Threatened Ulmus glabra
Small heath
Coenonympha pamphilus
Near Threatened Festuca spp.
Heart moth
Dicycla oo
Near Threatened Quercus robur
Large thorn
Ennomos autumnaria
Near Threatened Acer pseudoplatanus, Corylus avellana, Quercus spp., Ulmus spp.
September thorn
Ennomos erosaria
Near Threatened Quercus spp.
Dusky thorn
Ennomos fuscantaria
Near Threatened Fraxinus excelsior
Grey pug
Eupithecia subfuscata
Near Threatened Centaurea spp.
Double dart
Graphiphora augur
Near Threatened Quercus spp., Ulmus spp.
Scarce forester
Jordanita globulariae
Near Threatened Centaurea nigra
Rosy minor
Litoligia literosa
Near Threatened Carex flacca
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.