
| 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 | 37 | . | . | . | . | . | . | . | . | . | 1 | . | 4 | 16 | 11 | . | 1 | . | . | . | . | . | |||||
| Large Skipper | 51 | . | . | . | . | . | . | . | 3 | . | 8 | 40 | . | 2 | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 4 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 4 | . | . | . | . | . | 3 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Clouded Yellow | 39 | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | 4 | 10 | 15 | 4 | 1 | . | 1 | . | |||||
| Brimstone | 319 | 8 | 1 | 8 | 12 | 7 | 28 | 13 | 14 | . | . | 8 | . | 28 | 50 | 26 | 45 | 24 | 7 | 6 | 1 | . | |||||
| Large White | 22 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 7 | 1 | . | . | 17 | 2 | . | |||||
| Small White | 166 | . | . | . | . | 1 | 1 | . | . | . | 2 | . | . | 14 | 42 | 14 | 28 | 31 | 22 | 5 | 3 | 6 | |||||
| Green-veined White | 4 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||||
| Orange Tip | 7 | . | . | . | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Brown Argus | 1 | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Common Blue | 379 | . | . | . | . | . | 43 | 59 | 99 | 16 | 5 | 16 | 9 | 74 | 234 | 300 | 230 | 93 | 32 | 25 | 12 | 2 | |||||
| Chalk-hill Blue | 11 | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 1 | 1 | . | . | . | . | . | |||||
| Holly Blue | 9 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 8 | . | . | . | . | . | . | |||||
| Red Admiral | 74 | . | . | . | . | . | 1 | 1 | 1 | . | . | 2 | . | 1 | 42 | 17 | 6 | . | . | . | . | . | |||||
| Painted Lady | 500 | . | . | 1 | . | . | 34 | 24 | 26 | 2 | 8 | 10 | 1 | 177 | 144 | 22 | 60 | 3 | 5 | 1 | 1 | . | |||||
| Small Tortoiseshell | 126 | . | . | 2 | 2 | . | . | . | . | . | . | 4 | 24 | 22 | 12 | 4 | 7 | 6 | 12 | 9 | 4 | 4 | |||||
| Peacock | 99 | . | 2 | 16 | 4 | 1 | . | . | . | . | . | . | . | 14 | 28 | 5 | 1 | . | . | . | . | . | |||||
| Comma | 3 | . | 1 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | |||||
| Dark Green Fritillary | 7 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 5 | . | . | . | . | . | . | . | . | . | . | 3 | 3 | . | . | . | . | . | . | . | . | . | |||||
| Marsh Fritillary | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 6 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | |||||
| Marbled White | 218 | . | . | . | . | . | . | . | . | . | 4 | 32 | 94 | 15 | 10 | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 216 | . | . | . | . | . | . | . | . | . | . | . | 5 | 198 | 75 | 7 | 3 | . | . | . | . | . | |||||
| Meadow Brown | 2607 | . | . | . | . | . | . | . | 1 | 58 | 94 | 297 | 702 | 322 | 564 | 104 | 131 | 17 | 6 | 4 | . | . | |||||
| Small Heath | 502 | . | . | . | . | . | 9 | 16 | 43 | 9 | 32 | 65 | 44 | . | 16 | 8 | 30 | 88 | 36 | 38 | 33 | 16 | |||||