
| 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 | 82 | . | . | . | . | . | . | . | . | . | . | . | . | 9 | 15 | 24 | 19 | 3 | 1 | . | . | . | . | . | |||
| Silver-spotted Skipper | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | |||
| Large Skipper | 28 | . | . | . | . | . | . | . | . | . | 2 | 9 | 13 | 3 | 1 | . | . | . | . | . | . | . | . | . | |||
| Dingy Skipper | 36 | . | . | . | 2 | 5 | 14 | 12 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Grizzled Skipper | 59 | . | 2 | 10 | 13 | 9 | 8 | 10 | 6 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Brimstone | 83 | . | 3 | 5 | 7 | 4 | 5 | 8 | . | . | . | . | . | . | . | 7 | 7 | 3 | 14 | 10 | 1 | . | 4 | . | |||
| Large White | 26 | . | . | . | . | 1 | . | . | 1 | . | . | . | 1 | . | 7 | 5 | 3 | . | 3 | 2 | 1 | 2 | . | . | |||
| Small White | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 3 | . | 1 | . | . | . | |||
| Green-veined White | 5 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | 1 | . | . | . | . | |||
| Orange Tip | 8 | . | . | 3 | 1 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Green Hairstreak | 30 | . | 1 | 2 | 10 | 3 | 5 | 4 | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Small Copper | 6 | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | |||
| Small Blue | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Brown Argus | 61 | . | . | . | . | . | 1 | 16 | 1 | . | . | . | . | . | . | . | 13 | 6 | 5 | 8 | 2 | . | . | . | |||
| Common Blue | 257 | . | . | . | . | . | 8 | 36 | 30 | 7 | 14 | 5 | . | . | . | 1 | 11 | 41 | 33 | 30 | 13 | 1 | 1 | . | |||
| Holly Blue | 3 | . | . | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Duke of Burgundy Fritillary | 14 | . | . | 2 | 3 | 8 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Red Admiral | 20 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | 1 | 3 | 14 | |||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | |||
| Peacock | 24 | 3 | 5 | 4 | 1 | 2 | . | 1 | . | . | . | . | . | . | . | 3 | 1 | 3 | 1 | . | . | . | . | . | |||
| Comma | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | . | . | |||
| Pearl-bordered Fritillary | 8 | . | . | . | 1 | 4 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Dark Green Fritillary | 451 | . | . | . | . | . | . | . | . | . | 7 | 95 | 122 | 140 | 51 | 24 | 8 | . | . | . | . | . | . | . | |||
| Marsh Fritillary | 3 | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Speckled Wood | 52 | . | 3 | 3 | 7 | 3 | . | 5 | 2 | 6 | 1 | 2 | 1 | . | . | . | 3 | 1 | 3 | 2 | 4 | 4 | . | . | |||
| Marbled White | 750 | . | . | . | . | . | . | . | . | . | 26 | 158 | 238 | 193 | 97 | 33 | 5 | . | . | . | . | . | . | . | |||
| Gatekeeper / Hedge Brown | 184 | . | . | . | . | . | . | . | . | . | . | . | . | 7 | 58 | 58 | 34 | 6 | 1 | . | . | . | . | . | |||
| Meadow Brown | 2532 | . | . | . | . | . | . | . | . | . | 6 | 23 | 37 | 33 | 81 | 158 | 494 | 530 | 186 | 177 | 93 | 96 | 70 | 37 | |||
| Small Heath | 513 | . | . | . | . | . | 3 | 9 | 6 | 6 | 11 | 66 | 77 | 122 | 85 | 66 | 34 | 1 | 1 | 3 | . | 2 | 2 | 1 | |||
| Ringlet | 155 | . | . | . | . | . | . | . | . | . | 2 | 46 | 49 | 40 | 17 | 1 | . | . | . | . | . | . | . | . | |||