
| 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 | ||||||||||||||||||||||||||
| Large Skipper | 76 | . | . | . | . | . | . | . | . | . | . | 2 | 18 | 18 | 17 | 5 | 4 | 1 | 1 | . | . | . | . | . | . | ||
| Dingy Skipper | 30 | . | . | 1 | . | . | 1 | 1 | 3 | 6 | 5 | 4 | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | ||
| Brimstone | 94 | 2 | 2 | 7 | 3 | 2 | 3 | 3 | 12 | 6 | 9 | 3 | 2 | . | . | 1 | 3 | 4 | 8 | 1 | 7 | 2 | 5 | 2 | 1 | ||
| Large White | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | 2 | . | . | . | ||
| Small White | 25 | . | . | . | . | 1 | 1 | 1 | 3 | 3 | 7 | 1 | . | . | . | . | . | 2 | 4 | . | 2 | . | . | . | . | ||
| Green-veined White | 18 | . | . | . | 1 | . | 1 | . | 1 | . | 1 | . | . | . | . | 2 | 3 | 3 | 3 | 3 | . | . | . | . | . | ||
| Orange Tip | 11 | . | . | . | . | 3 | . | . | 2 | 2 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Green Hairstreak | 14 | . | . | . | . | 3 | 2 | 5 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Small Copper | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | 2 | . | . | . | ||
| Northern Brown Argus | 135 | . | . | . | . | . | . | . | . | . | . | 2 | 17 | 16 | 26 | 15 | 21 | 11 | 10 | 4 | 3 | . | . | . | . | ||
| Common Blue | 145 | . | . | . | . | . | . | . | . | . | . | . | 1 | 23 | 26 | 26 | 27 | 18 | 11 | 9 | 3 | 1 | . | . | . | ||
| Holly Blue | 68 | . | . | 1 | 4 | 12 | 11 | 10 | 14 | 11 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Duke of Burgundy Fritillary | 116 | . | . | . | . | . | 2 | 12 | 32 | 43 | 22 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Red Admiral | 25 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 3 | 12 | 2 | 2 | 1 | . | . | 1 | ||
| Painted Lady | 142 | . | . | . | . | . | . | . | 3 | 9 | 24 | 2 | . | . | . | . | 3 | 48 | 29 | 19 | 3 | 1 | . | . | . | ||
| Small Tortoiseshell | 7 | 1 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | ||
| Peacock | 76 | 1 | 2 | 5 | 9 | 7 | 2 | 3 | 2 | 1 | . | . | . | . | . | . | . | 5 | 12 | 15 | 4 | 3 | 1 | . | . | ||
| Small Pearl-bordered Fritillary | 205 | . | . | . | . | . | . | . | . | . | 7 | 57 | 49 | 21 | 15 | 3 | . | . | . | . | . | . | . | . | . | ||
| Pearl-bordered Fritillary | 184 | . | . | . | . | . | . | . | 31 | 54 | 64 | 17 | 4 | 1 | 3 | . | . | . | . | . | . | . | . | . | . | ||
| High Brown Fritillary | 297 | . | . | . | . | . | . | . | . | . | . | . | . | 23 | 42 | 57 | 55 | 51 | 38 | 17 | 7 | 6 | 1 | . | . | ||
| Dark Green Fritillary | 57 | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 18 | 14 | 7 | 7 | 4 | 1 | . | . | . | . | . | ||
| Silver-washed Fritillary | 14 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 5 | 2 | 4 | . | 2 | . | . | . | . | ||
| Wall Brown | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 1 | . | 2 | . | ||
| Grayling | 9 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 3 | 3 | . | . | . | 1 | . | . | . | ||
| Meadow Brown | 286 | . | . | . | . | . | . | . | . | . | . | . | . | 39 | 42 | 57 | 70 | 42 | 28 | 8 | . | . | . | . | . | ||
| Small Heath | 303 | . | . | . | . | . | . | . | . | . | 16 | 29 | 38 | 34 | 50 | 32 | 27 | 10 | 13 | 9 | 7 | 2 | . | 2 | . | ||