
| 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 | 84 | . | . | . | . | . | . | . | 2 | 9 | 37 | 11 | 14 | 4 | 6 | . | . | . | |||||||||
| Large Skipper | 16 | . | . | . | . | . | 8 | 1 | 1 | 4 | . | . | . | . | . | . | . | . | |||||||||
| Dingy Skipper | 31 | . | . | 13 | 7 | 10 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 29 | . | . | 6 | 2 | 5 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | 43 | . | . | . | . | . | . | . | . | . | . | 7 | 8 | 6 | 10 | 5 | 4 | 3 | |||||||||
| Brimstone | 148 | 1 | 2 | 14 | 9 | 6 | 9 | 2 | . | 1 | . | . | 15 | 5 | 18 | 7 | 5 | 1 | |||||||||
| Large White | 14 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | 1 | 6 | . | |||||||||
| Small White | 259 | . | . | 1 | 1 | 2 | 4 | . | . | 1 | 1 | 35 | 89 | 40 | 93 | 14 | 6 | 6 | |||||||||
| Green-veined White | 25 | . | . | . | . | . | . | . | . | . | . | 7 | 2 | 13 | 9 | 2 | . | . | |||||||||
| Orange Tip | 10 | . | . | 6 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | 10 | . | . | . | 1 | . | . | . | . | . | . | 3 | . | 4 | 3 | 1 | . | . | |||||||||
| Small Blue | 2 | . | . | 4 | 7 | . | 1 | . | . | . | . | . | . | . | 16 | . | . | . | |||||||||
| Brown Argus | 141 | . | . | 2 | . | 2 | 1 | 1 | . | 1 | . | 14 | . | 35 | . | 34 | 2 | 25 | |||||||||
| Common Blue | 790 | . | . | 5 | 71 | 23 | 24 | 9 | 2 | 5 | . | 13 | 30 | 85 | 242 | 94 | 14 | 142 | |||||||||
| Chalk-hill Blue | 346 | . | . | . | . | . | . | . | . | . | . | 31 | 65 | 107 | 62 | 53 | 2 | . | |||||||||
| Adonis Blue | 761 | . | . | . | 25 | 29 | 10 | 2 | . | . | . | . | . | . | 86 | 207 | 113 | 96 | |||||||||
| Holly Blue | 3 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 15 | . | . | . | |||||||||
| Duke of Burgundy Fritillary | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 121 | . | . | . | 5 | 1 | 2 | . | . | 1 | 3 | 26 | 32 | 47 | 12 | 2 | 1 | . | |||||||||
| Painted Lady | 331 | . | . | . | 16 | 8 | 2 | . | 1 | 2 | 5 | 103 | 152 | 74 | 37 | 3 | . | . | |||||||||
| Small Tortoiseshell | 50 | . | . | 1 | . | . | . | . | . | 1 | 4 | 13 | 10 | 2 | . | 4 | 3 | 4 | |||||||||
| Peacock | 71 | . | 4 | . | . | . | . | . | . | . | . | 13 | 21 | 18 | 10 | 2 | 2 | . | |||||||||
| Comma | 4 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | |||||||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | . | . | . | . | |||||||||
| Speckled Wood | 55 | . | . | 1 | . | 3 | 7 | 2 | . | . | . | . | . | 1 | . | 9 | 10 | 9 | |||||||||
| Marbled White | 104 | . | . | . | . | . | . | 1 | 11 | 25 | 29 | 9 | 22 | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 384 | . | . | . | . | . | . | . | . | 4 | 53 | 111 | 133 | 58 | 20 | 8 | . | . | |||||||||
| Meadow Brown | 1633 | . | . | . | . | . | . | 14 | 19 | 57 | 89 | 209 | 385 | 187 | 573 | 129 | 39 | 56 | |||||||||
| Small Heath | 322 | . | . | 1 | 8 | 19 | 27 | 23 | 43 | 54 | 41 | 13 | 3 | 6 | 4 | 20 | 12 | 5 | |||||||||
| Ringlet | 6 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||||||