
| 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 | 41 | . | . | . | . | . | . | . | . | 3 | 9 | 18 | 5 | . | 2 | . | . | . | |||||||||
| Essex Skipper | 2 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||||||||
| Large Skipper | 3 | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | |||||||||
| Dingy Skipper | 47 | . | . | . | 4 | 10 | 13 | 3 | 2 | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 14 | . | . | . | 3 | 7 | 5 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | 44 | 1 | 3 | 2 | . | 5 | 8 | 1 | 2 | . | . | 4 | 5 | . | 5 | 2 | . | . | |||||||||
| Large White | 38 | . | . | . | . | 2 | . | . | . | 1 | 4 | 2 | 6 | 8 | 2 | . | 1 | 2 | |||||||||
| Small White | 201 | . | . | . | . | . | . | . | . | 1 | 3 | 13 | 18 | 17 | 12 | 38 | 33 | 14 | |||||||||
| Green-veined White | 66 | . | 1 | . | . | 3 | 4 | 3 | . | . | . | 2 | 4 | 1 | 3 | 5 | 21 | 4 | |||||||||
| Orange Tip | 4 | . | 1 | 2 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 3 | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brown Argus | 4 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | . | 1 | . | |||||||||
| Common Blue | 98 | . | . | . | . | 2 | 3 | 2 | 2 | . | . | 2 | 8 | 11 | 13 | 28 | 3 | . | |||||||||
| Chalk-hill Blue | 128 | . | . | . | . | . | . | . | . | . | . | 29 | 37 | 2 | 34 | 11 | 4 | . | |||||||||
| Adonis Blue | 29 | . | . | . | . | 1 | . | . | 2 | . | . | . | . | . | . | . | 18 | 8 | |||||||||
| Holly Blue | 13 | . | 3 | 2 | 2 | . | . | . | . | . | . | . | 2 | . | . | 1 | . | . | |||||||||
| Duke of Burgundy Fritillary | 2 | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 16 | . | . | . | . | 1 | . | . | . | 2 | 1 | . | . | . | . | . | 5 | 5 | |||||||||
| Painted Lady | 3 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | . | . | |||||||||
| Small Tortoiseshell | 31 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 8 | 16 | |||||||||
| Peacock | 23 | 4 | 4 | 2 | . | . | . | . | . | . | . | 2 | 1 | 1 | . | 1 | . | . | |||||||||
| Comma | 11 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 3 | 6 | |||||||||
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | |||||||||
| Speckled Wood | 120 | . | . | . | . | 2 | 1 | 4 | . | 6 | 1 | 2 | 6 | 7 | 7 | 15 | 25 | 14 | |||||||||
| Marbled White | 64 | . | . | . | . | . | . | . | 3 | 17 | 18 | 3 | . | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 363 | . | . | . | . | . | . | . | . | 1 | 61 | 72 | 74 | 27 | 33 | 6 | . | . | |||||||||
| Meadow Brown | 2588 | . | . | . | . | . | . | . | 9 | 33 | 89 | 265 | 574 | 169 | 520 | 188 | 145 | 52 | |||||||||
| Small Heath | 230 | . | . | . | . | . | 2 | 3 | 17 | 45 | 23 | 16 | 6 | 1 | 1 | 7 | 12 | 4 | |||||||||
| Ringlet | 11 | . | . | . | . | . | . | . | 1 | 9 | . | 2 | 1 | . | . | . | . | . | |||||||||