
| 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 | 113 | . | . | 1 | . | 1 | 3 | 27 | 45 | 19 | 10 | 4 | 2 | . | . | . | . | . | |||||||||
| Essex Skipper | 3 | . | . | 1 | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | |||||||||
| Large Skipper | 55 | . | . | . | . | 3 | 9 | 9 | 16 | 13 | 4 | 1 | . | . | . | . | . | . | |||||||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||||||
| Brimstone | 74 | 12 | 5 | 3 | 4 | . | . | . | . | . | . | 1 | 1 | 2 | 1 | . | . | . | |||||||||
| Large White | 58 | . | . | 2 | 1 | . | . | 2 | 1 | . | 11 | 3 | 5 | 5 | 12 | 3 | 4 | 1 | |||||||||
| Small White | 8 | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | 4 | 1 | 1 | . | |||||||||
| Green-veined White | 15 | . | 1 | 2 | . | . | . | 2 | . | . | . | 3 | 1 | . | 2 | 1 | 1 | 1 | |||||||||
| Orange Tip | 3 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 13 | . | . | 4 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | 42 | . | . | 1 | 2 | . | . | 1 | 1 | 1 | 2 | 2 | 1 | 4 | 2 | 3 | 2 | 9 | |||||||||
| Silver-studded Blue | 191 | . | . | 3 | 15 | 8 | 22 | 17 | 40 | 14 | 20 | 20 | 7 | 4 | 2 | 3 | 1 | . | |||||||||
| Brown Argus | 54 | . | . | 5 | . | 1 | . | . | . | 2 | 4 | 11 | 1 | 9 | 5 | 4 | 3 | 1 | |||||||||
| Common Blue | 122 | . | . | 13 | 7 | 4 | 1 | 1 | 1 | 2 | 10 | 17 | 14 | 11 | 9 | 6 | 4 | 1 | |||||||||
| Holly Blue | 5 | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 1 | 2 | . | . | |||||||||
| Red Admiral | 6 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | 3 | |||||||||
| Painted Lady | 3 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||||||||
| Small Tortoiseshell | 8 | 2 | . | . | . | 1 | . | . | . | . | . | . | 1 | 1 | . | 2 | . | . | |||||||||
| Peacock | 49 | 2 | 11 | . | 1 | . | . | . | . | 1 | . | 4 | . | 2 | . | 1 | . | 3 | |||||||||
| Comma | 5 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 2 | |||||||||
| Speckled Wood | 13 | . | . | 1 | . | . | . | . | . | . | . | 1 | 1 | 3 | . | 2 | 2 | . | |||||||||
| Marbled White | 9 | . | . | . | . | . | . | 6 | . | . | 3 | . | . | . | . | . | . | . | |||||||||
| Grayling | 1692 | . | . | . | . | . | . | . | 22 | 233 | 282 | 340 | 366 | 88 | 56 | 41 | 25 | . | |||||||||
| Gatekeeper / Hedge Brown | 1097 | . | . | . | . | . | . | 3 | 16 | 196 | 279 | 231 | 194 | 38 | 17 | 4 | 2 | . | |||||||||
| Meadow Brown | 1227 | . | . | . | . | 11 | 33 | 82 | 145 | 254 | 238 | 171 | 129 | 45 | 16 | 9 | 5 | . | |||||||||
| Small Heath | 216 | . | . | . | 1 | 3 | 19 | 28 | 63 | 42 | 13 | 13 | 2 | . | . | 16 | 9 | 1 | |||||||||