
| 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 | 40 | . | . | . | . | 1 | 1 | 11 | 16 | 1 | 4 | . | . | . | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | 22 | . | . | . | 10 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 27 | . | 2 | 2 | 4 | . | 1 | . | . | . | . | . | 5 | 3 | 2 | 2 | . | . | . | . | . | ||||||
| Large White | 9 | . | . | . | . | . | . | . | 1 | . | . | 2 | 1 | 2 | . | 1 | . | . | . | . | . | ||||||
| Small White | 26 | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 7 | 2 | 1 | 3 | 3 | 3 | . | 1 | ||||||
| Green-veined White | 36 | . | 2 | 2 | 3 | . | 1 | 1 | 1 | . | 3 | 4 | 4 | 5 | 1 | . | . | . | 1 | . | . | ||||||
| Orange Tip | NI | . | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 11 | . | . | 2 | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Northern Brown Argus | 103 | . | . | . | . | . | 4 | 12 | 28 | 12 | 7 | 11 | 8 | 8 | 3 | 1 | . | . | . | . | . | ||||||
| Common Blue | 162 | . | . | . | . | . | . | 15 | 32 | 29 | 28 | 17 | 14 | 11 | . | 1 | 1 | . | . | . | . | ||||||
| Holly Blue | 11 | . | . | 3 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Duke of Burgundy Fritillary | 110 | . | 1 | 28 | 23 | 18 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 61 | . | . | . | . | . | . | . | 1 | . | 4 | 1 | 2 | 1 | . | 1 | 10 | 16 | 21 | 3 | . | ||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | 1 | . | . | ||||||
| Small Tortoiseshell | 15 | . | . | . | . | . | . | . | 2 | 3 | 1 | . | . | . | 3 | 4 | 1 | . | 2 | . | . | ||||||
| Peacock | 46 | 2 | 1 | 1 | . | . | . | . | . | . | . | 3 | 13 | 14 | 1 | . | . | . | . | . | . | ||||||
| Comma | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Small Pearl-bordered Fritillary | 232 | . | . | . | . | 30 | 46 | 60 | 17 | 8 | 3 | . | . | . | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | 213 | . | . | 48 | 55 | 27 | 11 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| High Brown Fritillary | 303 | . | . | . | . | . | . | 5 | 42 | 68 | 60 | 38 | 41 | 28 | 9 | 3 | . | . | . | . | . | ||||||
| Dark Green Fritillary | 70 | . | . | . | . | . | . | 7 | 16 | 6 | 14 | 14 | 3 | 4 | . | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Wall Brown | 6 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 3 | 1 | . | . | . | ||||||
| Grayling | 17 | . | . | . | . | . | . | . | 1 | 2 | 4 | 6 | 4 | . | 1 | . | . | . | . | . | . | ||||||
| Meadow Brown | 286 | . | . | . | . | . | . | 3 | 47 | 57 | 49 | 50 | 43 | 23 | 2 | . | . | . | . | . | . | ||||||
| Small Heath | 76 | . | . | . | . | 4 | 5 | 7 | 9 | 8 | 8 | 8 | 5 | 8 | 2 | 1 | 1 | . | . | . | . | ||||||