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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 | ||
| Small Tortoiseshell | Stable | 44 | more | |||
| Orange Tip | Increasing | 11 | more | |||
| Ringlet | Stable | 110 | more | |||
| Brown Argus | Increasing | Colonised in 1994 | 3 | .1 | more | |
| Green Hairstreak | Increasing | Colonised in 1996 | * | 1 | .4 | more |
| Holly Blue | Increasing | Colonised in 1990 | 5 | .9 | more | |
| Small Heath | Decreasing | 93 | more | |||
| Clouded Yellow | ? | 0 | .19 | more | ||
| Dingy Skipper | ? | 0 | .33 | more | ||
| Brimstone | Increasing | 17 | more | |||
| Small Copper | Increasing | 8 | .0 | more | ||
| Chalk-hill Blue | Increasing | Colonised in 1999 | 2 | .1 | more | |
| Meadow Brown | Decreasing | 660 | more | |||
| Gatekeeper/Hedge Brown | Decreasing | 260 | more | |||
| Marbled White | Increasing | 42 | more | |||
| Peacock | Increasing | 33 | more | |||
| Large Skipper | Stable | 9 | .8 | more | ||
| Speckled Wood | Increasing | 17 | more | |||
| Wall Brown | Stable | 2 | .4 | more | ||
| Large White | Increasing | 32 | more | |||
| Green-veined White | Increasing | * | 40 | more | ||
| Small White | Decreasing | 75 | more | |||
| Comma | Increasing | 6 | .5 | more | ||
| Common Blue | Stable | 58 | more | |||
| Purple Hairstreak | Stable | 0 | .25 | more | ||
| Small Skipper | ? | 130 | more | |||
| Red Admiral | Increasing | 4 | .8 | more | ||
| Painted Lady | Increasing | 2 | .6 | 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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