Skip Navigation LinksHome » Map » Sites List » Holtspur Bottom Reserve

Holtspur Bottom Reserve

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

For example, clicking on one of the section titles below will display the site description (shown automatically), as well as a list of the species recorded here, and their yearly counts. However, you can also chose to Show All the sections, or even Hide All, if you so wish.

Map of Holtspur Bottom Reserve

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


County : England(Buckinghamshire)
Gridref : SU91709040
Year established : 2007
Number of sections : 9
Altitude (m) :
Length (m) : 1125
Width (m) : 10
Broad habitat : Dry semi/unimproved (flower rich) chalk/limestone grassland
The following species have been recorded on this site:
SpeciesStatusColonised / ExtinctMean Count 
Essex/Small SkipperIncreasing 39.17 more
Small SkipperStable 5.89 more
Essex Skipper? 1.45 more
Large SkipperStable 6.34 more
Clouded Yellow? 1.24 more
BrimstoneStable 34.99 more
Large WhiteStable 24.99 more
Small WhiteStable 35.17 more
Green-veined WhiteStable 3.83 more
Orange-tipStable 6.63 more
Green Hairstreak? 0.41 more
Small CopperStable 6.74 more
Small BlueStable 2.52 more
Brown ArgusStable 7.12 more
Common BlueStable 101.11 more
Chalk Hill Blue? 13.08 more
Adonis Blue? 0.26 more
Holly BlueStable 3.45 more
Red Admiral? 2.22 more
Painted Lady? 1.08 more
Small TortoiseshellIncreasing 8.72 more
PeacockStable 9.93 more
CommaStable 7.05 more
Speckled WoodStable 22.75 more
Marbled WhiteStable 82.46 more
GatekeeperStable 45.07 more
Meadow BrownDeclining 468.23 more
Small Heath? 0.31 more
RingletStable 64.77 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 UKBMS is run by  Butterfly Conservation (BC), the Centre for Ecology and Hydrology (CEH) and the British Trust for Ornithology (BTO), in partnership with the Joint Nature Conservation Committee (JNCC), and supported and steered by Forestry Commission (FC),  Natural England (NE), Natural Resources Wales (NRW), Northern Ireland Environment Agency (NIEA), and Scottish Natural Heritage (SNH). The UKBMS is indebted to all volunteers who contribute data to the scheme.