
| 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 | 358 | . | . | . | . | . | . | . | . | . | 24 | 86 | 120 | 12 | 31 | 1 | . | . | |||||||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | 18 | . | . | . | . | . | . | . | . | |||||||||
| Large Skipper | 13 | . | . | . | . | . | . | 2 | 3 | 5 | 3 | . | . | . | . | . | . | . | |||||||||
| Dingy Skipper | 10 | . | . | . | 1 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 6 | . | 1 | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | 30 | 1 | 1 | 1 | 10 | 4 | . | . | 1 | . | . | . | 2 | . | 1 | . | . | . | |||||||||
| Large White | 233 | . | . | . | . | 6 | 3 | 1 | 1 | 1 | 3 | 6 | 17 | 45 | 55 | 32 | 12 | 11 | |||||||||
| Small White | 341 | . | . | 1 | 5 | . | . | 1 | 5 | . | 2 | 3 | 12 | 36 | 53 | 58 | 74 | 17 | |||||||||
| Green-veined White | 4 | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | 1 | . | . | . | |||||||||
| Orange Tip | 14 | . | 2 | . | 4 | 8 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 3 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | 2 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Blue | 259 | . | . | . | . | . | 38 | 65 | 54 | 46 | 40 | 2 | . | 4 | 5 | 1 | . | 1 | |||||||||
| Common Blue | 178 | . | . | . | . | . | 13 | 9 | 19 | 3 | 1 | . | . | . | 19 | 42 | 34 | 14 | |||||||||
| Chalk-hill Blue | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||||
| Holly Blue | 10 | . | 1 | . | 2 | 2 | . | . | . | . | . | . | 1 | 1 | . | . | . | . | |||||||||
| Duke of Burgundy Fritillary | 178 | . | . | 1 | 77 | 59 | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 12 | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | 6 | |||||||||
| Painted Lady | 3 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | |||||||||
| Small Tortoiseshell | 196 | . | . | . | . | . | . | . | . | 2 | . | 3 | 6 | 3 | 7 | 14 | 63 | 41 | |||||||||
| Peacock | 43 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | 17 | 11 | . | . | . | |||||||||
| Comma | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | |||||||||
| Dark Green Fritillary | 128 | . | . | . | . | . | . | . | 2 | 29 | 30 | 47 | 16 | 1 | . | 1 | . | . | |||||||||
| Speckled Wood | 13 | . | . | . | . | 2 | . | . | . | . | 1 | . | 1 | 3 | 1 | 1 | 1 | . | |||||||||
| Marbled White | 714 | . | . | . | . | . | . | 1 | 4 | 144 | 190 | 158 | 138 | 6 | 1 | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 733 | . | . | . | . | . | . | . | . | . | 2 | 83 | 256 | 99 | 87 | 16 | 8 | . | |||||||||
| Meadow Brown | 2306 | . | . | . | . | . | . | 2 | 16 | 39 | 64 | 83 | 372 | 449 | 484 | 215 | 100 | 14 | |||||||||
| Small Heath | 693 | . | . | . | 27 | 64 | 55 | 55 | 121 | 111 | 102 | 59 | 53 | 5 | 11 | 13 | 4 | . | |||||||||
| Ringlet | 150 | . | . | . | . | . | . | . | 4 | 42 | 48 | 39 | 9 | 2 | . | . | . | . | |||||||||