
| 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 | 76 | . | . | . | . | . | . | . | . | . | . | . | 3 | 15 | 26 | 12 | 14 | . | 1 | . | . | . | . | . | . | ||
| Large Skipper | 38 | . | . | . | . | . | . | . | . | . | 4 | 12 | 1 | 8 | 10 | 1 | . | . | . | . | . | . | . | . | . | ||
| Dingy Skipper | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Grizzled Skipper | 4 | . | . | . | 1 | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Brimstone | 79 | 10 | 3 | 4 | 8 | . | 8 | 11 | 19 | 1 | 1 | 1 | . | . | 2 | 1 | 7 | . | 1 | . | 1 | . | . | . | . | ||
| Large White | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 3 | 1 | 2 | . | . | . | . | . | ||
| Small White | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | 1 | . | . | . | . | ||
| Green-veined White | 7 | . | . | 1 | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||
| Orange Tip | 4 | . | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Brown Argus | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||
| Common Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||
| Duke of Burgundy Fritillary | 9 | . | . | . | 2 | 1 | 4 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| White Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||
| Red Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||
| Small Tortoiseshell | 5 | . | . | . | . | . | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | 3 | . | . | . | . | . | ||
| Peacock | 8 | 1 | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | ||
| Comma | 7 | 3 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | ||
| Small Pearl-bordered Fritillary | 168 | . | . | . | . | . | 1 | 14 | 35 | 45 | 36 | 32 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Pearl-bordered Fritillary | 56 | . | . | . | 6 | 10 | 20 | 5 | 8 | 7 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Silver-washed Fritillary | 29 | . | . | . | . | . | . | . | . | . | . | . | 5 | 2 | 3 | . | 14 | . | 3 | . | . | . | . | . | . | ||
| Speckled Wood | 23 | . | . | . | 3 | . | 1 | . | 3 | 3 | 3 | 3 | . | . | 1 | . | 1 | . | 1 | 1 | . | . | 1 | . | . | ||
| Marbled White | 67 | . | . | . | . | . | . | . | . | . | . | . | 11 | 14 | 23 | 12 | 1 | . | . | . | . | . | . | . | . | ||
| Gatekeeper / Hedge Brown | 162 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 27 | 43 | 55 | 7 | 7 | 3 | . | . | . | . | . | ||
| Meadow Brown | 65 | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 9 | 7 | 11 | 10 | 9 | 6 | 5 | . | . | . | . | . | ||
| Small Heath | 4 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||
| Ringlet | 105 | . | . | . | . | . | . | . | . | . | . | . | 23 | 25 | 24 | 16 | 5 | . | 1 | . | . | . | . | . | . | ||