
| APR | MAY | JUN | JUL | AUG | SEP | ||||||||||||||||||||||
| Week no. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | |
| Site | Ind | ||||||||||||||||||||||||||
| Small Skipper | 25 | . | . | . | . | . | . | . | . | . | . | 1 | 6 | 2 | 3 | 1 | 3 | 4 | . | 1 | . | . | |||||
| Large Skipper | 10 | . | . | . | . | . | . | . | . | . | . | 2 | 3 | 1 | . | . | 1 | . | . | . | . | . | |||||
| Grizzled Skipper | 3 | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 61 | 8 | 4 | 8 | 5 | 9 | 1 | 1 | 1 | 1 | . | . | . | . | . | 1 | 3 | . | . | 2 | 2 | 1 | |||||
| Large White | 57 | . | . | . | 6 | 2 | 4 | 3 | 2 | 5 | 3 | 2 | 1 | . | 2 | 3 | 11 | 2 | 2 | 1 | . | . | |||||
| Small White | 29 | . | . | . | . | . | . | 1 | 4 | 3 | 2 | . | . | 2 | 2 | 3 | 3 | 3 | 5 | 1 | . | . | |||||
| Green-veined White | 26 | . | . | . | 2 | 6 | 6 | 2 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Orange Tip | 11 | . | . | . | . | 2 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | 11 | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | 1 | 1 | 1 | . | 1 | . | . | |||||
| Brown Argus | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||||
| Common Blue | 3 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | . | . | . | . | . | |||||
| White Admiral | 10 | . | . | . | . | . | . | . | . | . | . | . | 4 | 3 | . | . | 1 | . | . | . | . | . | |||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | |||||
| Small Tortoiseshell | 25 | 2 | 3 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 6 | 5 | 3 | |||||
| Peacock | 85 | 5 | 24 | 6 | 5 | 2 | . | . | 2 | 1 | . | . | . | . | 3 | 2 | 8 | 7 | 7 | 4 | . | 1 | |||||
| Comma | 21 | 3 | 2 | 1 | . | 1 | . | . | 1 | . | . | 2 | 2 | . | . | . | . | . | 1 | 2 | 1 | . | |||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | 17 | . | . | . | . | . | 6 | 7 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 60 | . | . | . | 1 | 2 | . | . | 1 | 3 | 3 | 2 | . | 1 | . | . | 2 | 5 | 4 | 10 | 10 | 5 | |||||
| Wall Brown | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 5 | 1 | . | . | . | |||||
| Marbled White | 4 | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 53 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 16 | 13 | 7 | 8 | 5 | 2 | . | . | |||||
| Meadow Brown | 133 | . | . | . | . | . | . | . | . | . | 1 | 6 | 20 | 28 | 16 | 16 | 18 | 10 | 4 | 1 | . | . | |||||
| Small Heath | 6 | . | . | . | . | . | 1 | . | 1 | 2 | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Ringlet | 6 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 3 | 1 | . | . | . | . | . | . | |||||