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Aldbury Nowers

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 Aldbury Nowers

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


County : England(Hertfordshire)
Gridref : SP95201290
Year established : 1992
Number of sections : 14
Altitude (m) : 145
Length (m) : 1200
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 
Essex/Small SkipperStable 49.80 more
Small SkipperStable 18.31 more
Essex SkipperStable 6.14 more
Large SkipperIncreasing 41.37 more
Dingy SkipperIncreasing 2.24 more
Grizzled SkipperIncreasing 1.61 more
Clouded Yellow? 0.43 more
BrimstoneStable 123.23 more
Large WhiteStable 57.12 more
Small WhiteDeclining 46.67 more
Green-veined WhiteStable 15.69 more
Orange-tipStable 14.49 more
Green HairstreakDeclining 6.36 more
White-letter Hairstreak? 0.09 more
Small CopperStable 14.15 more
Small Blue? 0.04 more
Brown ArgusStable 52.89 more
Common BlueStable 90.43 more
Chalk Hill Blue? 2.66 more
Holly BlueStable 1.02 more
Duke of Burgundy? 0.41 more
Red AdmiralIncreasing 4.44 more
Painted LadyStable 3.36 more
Small TortoiseshellStable 9.38 more
PeacockStable 33.12 more
CommaIncreasing 5.18 more
Dark Green FritillaryIncreasing 1.86 more
Silver-washed Fritillary? 0.59 more
Speckled WoodStable 12.77 more
Wall? 0.72 more
Marbled WhiteIncreasing 197.54 more
GatekeeperStable 169.41 more
Meadow BrownIncreasing 620.09 more
Small HeathIncreasing 40.48 more
RingletStable 128.14 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.