
| 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 | 25 | . | . | . | . | . | . | . | . | 1 | 9 | 7 | 5 | 1 | . | . | . | . | . | ||||||||
| Dingy Skipper | 3 | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Grizzled Skipper | 23 | . | . | 3 | 5 | 8 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | NI | . | 6 | 2 | 4 | 2 | 1 | . | . | . | 1 | 6 | 5 | 1 | 5 | 2 | 1 | 1 | 3 | ||||||||
| Large White | 18 | . | . | . | . | . | . | . | . | 3 | 4 | 6 | . | 1 | . | . | 2 | . | . | ||||||||
| Small White | 60 | . | . | . | . | . | . | . | . | . | 4 | 10 | 11 | 17 | . | 7 | 6 | 5 | . | ||||||||
| Green-veined White | 3 | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | 6 | . | . | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | 9 | . | . | 1 | 1 | . | . | . | . | . | . | 3 | . | 1 | . | 2 | . | . | . | ||||||||
| Small Blue | 29 | . | . | . | . | 15 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brown Argus | 15 | . | . | . | . | 3 | 2 | . | . | . | . | . | . | 3 | . | 3 | . | 2 | . | ||||||||
| Common Blue | 110 | . | . | . | . | 12 | 12 | 9 | 9 | . | . | . | . | 5 | 6 | 24 | 20 | 4 | 2 | ||||||||
| Chalk-hill Blue | 326 | . | . | . | . | . | . | . | . | 9 | 9 | 45 | 83 | 96 | 23 | 25 | 15 | 2 | . | ||||||||
| Adonis Blue | 281 | . | . | . | . | 63 | 37 | 3 | 1 | . | . | . | . | 10 | 45 | 45 | 53 | 21 | . | ||||||||
| Holly Blue | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||||
| Red Admiral | 3 | . | . | . | . | . | . | . | . | 1 | . | . | 2 | . | . | . | . | . | . | ||||||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | 1 | . | ||||||||
| Small Tortoiseshell | NI | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | 3 | 15 | . | ||||||||
| Peacock | NI | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | ||||||||
| Dark Green Fritillary | 91 | . | . | . | . | . | . | . | . | 23 | 19 | 3 | 7 | 3 | . | . | . | . | . | ||||||||
| Marbled White | 81 | . | . | . | . | . | . | . | . | 13 | 2 | . | 2 | . | . | . | . | . | . | ||||||||
| Meadow Brown | 2906 | . | . | . | . | . | 2 | 2 | 7 | 44 | 94 | 376 | 548 | 464 | 462 | 368 | 313 | 56 | 33 | ||||||||
| Small Heath | 191 | . | . | . | . | 13 | 4 | 13 | 21 | 30 | 3 | 3 | 5 | . | . | 2 | . | 2 | . | ||||||||
| Ringlet | 20 | . | . | . | . | . | . | . | . | 9 | 3 | . | 1 | 1 | . | 3 | 1 | . | . | ||||||||
| Silver Y | NI | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | ||||||||