
| 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/Essex Skipper | 31 | . | . | . | . | . | . | . | . | . | 10 | 3 | . | . | 5 | 5 | . | . | . | . | |||||||
| Small Skipper | 4 | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | . | . | |||||||
| Large Skipper | 26 | . | . | . | . | . | . | . | 7 | 6 | 5 | . | 2 | . | . | 2 | . | . | . | . | |||||||
| Dingy Skipper | 59 | . | . | 1 | . | 22 | 9 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | |||||||
| Large White | NI | . | . | . | . | 1 | . | . | . | . | 2 | . | . | 3 | . | . | 1 | . | . | . | |||||||
| Small White | 46 | . | . | 2 | 1 | . | . | . | . | . | 6 | . | 8 | 2 | . | . | 1 | 4 | 8 | 1 | |||||||
| Small Copper | 8 | . | . | . | . | 1 | . | . | . | . | . | . | 2 | . | . | . | . | . | 4 | . | |||||||
| Small Blue | NI | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | 1 | . | . | |||||||
| Brown Argus | NI | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 1 | . | . | . | . | . | |||||||
| Common Blue | 471 | . | . | . | . | . | 1 | 23 | 34 | 9 | . | 1 | 31 | 69 | 37 | 33 | 95 | 43 | 64 | 1 | |||||||
| Chalk-hill Blue | 1814 | . | . | . | . | . | . | . | . | . | 17 | 73 | 375 | 197 | 603 | 310 | 195 | 23 | 5 | 2 | |||||||
| Adonis Blue | 183 | . | . | . | . | . | . | 41 | 28 | 5 | . | . | . | . | . | 3 | 26 | 17 | 9 | 1 | |||||||
| Red Admiral | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||
| Small Tortoiseshell | 5 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | |||||||
| Peacock | 22 | 1 | 2 | 6 | 3 | 1 | . | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||||
| Dark Green Fritillary | 11 | . | . | . | . | . | . | . | . | 4 | 5 | . | 1 | . | . | . | . | . | . | . | |||||||
| Wall Brown | 5 | . | . | . | . | . | 2 | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | |||||||
| Marbled White | 399 | . | . | . | . | . | . | . | 1 | 85 | 149 | 63 | 22 | 2 | 3 | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 111 | . | . | . | . | . | . | . | . | . | 20 | 17 | 30 | 11 | 11 | 3 | 13 | . | . | . | |||||||
| Meadow Brown | 1860 | . | . | . | . | . | . | 3 | 5 | 49 | 199 | 183 | 207 | 195 | 220 | 222 | 177 | 128 | 73 | 49 | |||||||
| Small Heath | 248 | . | . | . | . | 7 | 8 | 10 | 62 | 32 | 13 | 2 | . | 2 | 4 | 15 | 4 | 5 | 27 | 1 | |||||||