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West Yatton Down

Here we provide all the information we have for each transect site.

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Map of West Yatton Down

The map shows you the route that this butterfly transect follows.


County : England(Wiltshire)
Gridref : ST85307590
Year established : 1996
Number of sections : 15
Altitude (m) : 109
Length (m) : 3500
Width (m) : -1
Broad habitat : Dry semi/unimproved (flower rich) chalk/limestone grassland
The following species have been recorded on this site:
SpeciesStatusColonised / ExtinctMean Count 
Small SkipperDeclining 35.50 more
Essex SkipperIncreasing 2.63 more
Large SkipperStable 66.67 more
Dingy SkipperStable 88.08 more
Grizzled Skipper? 0.38 more
Clouded YellowStable 3.84 more
BrimstoneStable 180.85 more
Large WhiteStable 138.55 more
Small WhiteStable 64.05 more
Green-veined WhiteIncreasing 170.55 more
Orange-tipStable 47.62 more
Green HairstreakStable 31 more
Purple HairstreakDeclining 0.78 more
White-letter Hairstreak? 0.31 more
Small CopperStable 20.30 more
Small BlueStable 2.48 more
Brown ArgusStable 148.43 more
Common BlueStable 345.14 more
Chalk Hill BlueStable 217.56 more
Adonis BlueStable 7.89 more
Holly BlueStable 10.19 more
Red AdmiralStable 21.33 more
Painted LadyStable 4.37 more
Small TortoiseshellDeclining 44.04 more
PeacockDeclining 156.83 more
CommaStable 46.85 more
Dark Green FritillaryStable 2.57 more
Silver-washed FritillaryIncreasing 7.29 more
Marsh Fritillary? 0.52 more
Speckled WoodIncreasing 202.40 more
Wall? 0.35 more
Marbled WhiteStable 400.54 more
GatekeeperStable 186.80 more
Meadow BrownDeclining 988.59 more
Small HeathStable 171.07 more
RingletIncreasing 348.55 more

This table shows the species that have been recorded on this site. Where sufficient data is available, trends in abundance are assessed and colonisation/extinction events are identified. Click on 'more' to see a plot of abundance through time for each species. See green question mark above for more details.


The UK Butterfly Monitoring Scheme is organized and funded by Butterfly Conservation (BC), the Centre for Ecology and Hydrology (CEH), the British Trust for Ornithology (BTO), and the Joint Nature Conservation Committee (JNCC). The UKBMS is indebted to all volunteers who contribute data to the scheme.