
| 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 | NI | . | . | . | . | . | . | . | 2 | . | 10 | 25 | 21 | 59 | 52 | 2 | . | 1 | . | ||||||||
| Large Skipper | 7 | . | . | . | . | . | . | . | . | 4 | . | 1 | 2 | . | . | . | . | . | . | ||||||||
| Dingy Skipper | 41 | . | . | . | . | 8 | 14 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | ||||||||
| Grizzled Skipper | 112 | . | . | . | 1 | 14 | 40 | 5 | 4 | . | 1 | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | 333 | 11 | . | . | 20 | 16 | 14 | 7 | 5 | 1 | 1 | . | . | 7 | 22 | 14 | 65 | 40 | 3 | ||||||||
| Large White | 34 | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 4 | 7 | . | 10 | . | . | ||||||||
| Small White | 212 | . | . | . | 1 | . | . | 1 | . | . | . | 2 | . | 16 | 49 | 21 | 22 | 25 | 2 | ||||||||
| Green-veined White | 7 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 3 | . | . | . | . | ||||||||
| Orange Tip | 8 | . | . | . | . | 3 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | 14 | . | . | . | 2 | 3 | . | 2 | 5 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | 153 | . | . | . | 1 | 7 | 9 | . | . | . | 10 | 29 | 9 | 34 | 16 | 1 | 7 | 3 | 3 | ||||||||
| Brown Argus | 9 | . | . | . | . | . | 1 | . | 1 | 1 | . | . | . | . | . | . | . | 3 | . | ||||||||
| Common Blue | 96 | . | . | . | . | . | 1 | 20 | 12 | 5 | 1 | . | . | 4 | 9 | 1 | 6 | 9 | 1 | ||||||||
| Chalk-hill Blue | 15 | . | . | . | . | . | . | . | . | . | . | . | . | . | 7 | 2 | . | . | . | ||||||||
| Holly Blue | 23 | . | . | . | 1 | 1 | . | . | . | . | . | . | . | 1 | 9 | 1 | 2 | . | . | ||||||||
| White Admiral | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | ||||||||
| Red Admiral | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | ||||||||
| Painted Lady | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||||||||
| Small Tortoiseshell | 31 | . | 2 | 2 | 1 | . | . | . | . | . | . | 1 | 2 | . | 2 | . | . | 4 | 8 | ||||||||
| Peacock | 29 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 10 | 3 | 1 | 1 | 1 | ||||||||
| Comma | 10 | . | 1 | 1 | . | 1 | . | . | . | . | . | 1 | . | . | 1 | 1 | . | . | . | ||||||||
| Small Pearl-bordered Fritillary | 4 | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||||
| Dark Green Fritillary | 55 | . | . | . | . | . | . | . | . | . | 15 | 8 | 8 | 8 | 9 | . | . | . | . | ||||||||
| Speckled Wood | 30 | . | . | . | 1 | . | 1 | 2 | 4 | 2 | 1 | 3 | . | 1 | 1 | . | . | 2 | 5 | ||||||||
| Wall Brown | 6 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | 1 | . | ||||||||
| Gatekeeper / Hedge Brown | 405 | . | . | . | . | . | . | . | . | . | . | 26 | 74 | 120 | 89 | 24 | 2 | . | . | ||||||||
| Meadow Brown | 3560 | . | . | . | . | . | . | . | 8 | 36 | 328 | 399 | 471 | 550 | 481 | 270 | 182 | 130 | 25 | ||||||||
| Small Heath | 162 | . | . | . | . | 1 | . | 5 | 25 | 25 | 42 | 23 | 11 | 7 | 7 | . | 2 | 1 | 3 | ||||||||
| Ringlet | 5 | . | . | . | . | . | . | . | . | . | 1 | 1 | 2 | 1 | . | . | . | . | . | ||||||||