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Barnack Hills & Holes
The map shows you the route that this butterfly transect follows.
| County: | Cambridgeshire (England) |
| Gridref: | TF0704 |
| Year established: | 1981 |
| Number of sections: | 10 |
| Altitude (m): | Unknown |
| Length (m): | 1669 |
| Width (m): | Unknown |
| Broad habitat: | Dry semi/unimproved (flower rich) chalk/limestone grassland |
Species list...
The following species have been recorded on this site:
| Species | Status | Colonised/extinct | Asynchronous | Mean count | ||
| Orange Tip | Increasing | 11 | more | |||
| Ringlet | Stable | 110 | more | |||
| Brown Argus | Increasing | 3 | .2 | more | ||
| Green Hairstreak | Increasing | * | 1 | .7 | more | |
| Holly Blue | Increasing | 6 | .0 | more | ||
| Small Heath | Decreasing | 83 | more | |||
| Clouded Yellow | ? | 0 | .21 | more | ||
| Dingy Skipper | ? | 0 | .31 | more | ||
| Brimstone | Increasing | 18 | more | |||
| Small Copper | Stable | 7 | .7 | more | ||
| Chalk-hill Blue | Increasing | 2 | .2 | more | ||
| Meadow Brown | Decreasing | 670 | more | |||
| Gatekeeper / Hedge Brown | Decreasing | 250 | more | |||
| Marbled White | Increasing | 44 | more | |||
| Peacock | Increasing | 33 | more | |||
| Large Skipper | Stable | 9 | .2 | more | ||
| Speckled Wood | Increasing | 17 | more | |||
| Wall Brown | Decreasing | 2 | .2 | more | ||
| Large White | Stable | 31 | more | |||
| Green-veined White | Increasing | * | 39 | more | ||
| Small White | Decreasing | 73 | more | |||
| Comma | Increasing | 6 | .5 | more | ||
| Common Blue | Decreasing | 54 | more | |||
| Purple Hairstreak | Stable | 0 | .24 | more | ||
| Small Skipper | ? | 130 | more | |||
| Red Admiral | Increasing | 5 | .2 | more | ||
| Painted Lady | Increasing | 2 | .7 | more | ||
| Small/Essex Skipper | Increasing | * | 12 | 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. Species are marked as 'asynchronous' when their trends on this site are markedly different from the national trend. Click on 'more' to see a plot of abundance through time for each species. See green question mark above for more details.
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