
| 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 | 12 | . | . | . | . | . | . | . | . | . | . | . | 4 | 6 | 2 | . | . | . | . | . | . | . | |||||
| Essex Skipper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||
| Large Skipper | 26 | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 15 | 7 | . | . | . | . | . | . | |||||
| Brimstone | 3 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||
| Large White | 55 | . | 1 | 3 | . | 3 | 3 | . | 2 | . | . | . | 3 | 2 | 4 | 5 | . | 1 | 10 | 4 | 4 | 8 | |||||
| Small White | 49 | . | 1 | 4 | 3 | 10 | 1 | . | 4 | . | . | . | . | 3 | . | . | . | 4 | . | 10 | 7 | 2 | |||||
| Green-veined White | 3 | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | |||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||
| Common Blue | 14 | . | . | . | . | . | 1 | . | 1 | 3 | . | 1 | . | . | 2 | . | 1 | . | 1 | . | 1 | 2 | |||||
| Holly Blue | 8 | . | . | 3 | . | 3 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 28 | . | . | . | . | . | . | 1 | 1 | . | 2 | 4 | 5 | 3 | 1 | 1 | 1 | . | 2 | 2 | 2 | 2 | |||||
| Small Tortoiseshell | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | |||||
| Peacock | 7 | 1 | 2 | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Comma | 20 | . | 1 | . | . | . | . | . | . | . | . | . | 7 | 3 | 3 | 3 | 1 | 1 | . | 1 | . | . | |||||
| Silver-washed Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Speckled Wood | 178 | . | 5 | 21 | 3 | 6 | . | 1 | 1 | 5 | 5 | 5 | 1 | 2 | 14 | 29 | 6 | 8 | 17 | 7 | 11 | 14 | |||||
| Gatekeeper / Hedge Brown | 93 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 14 | 20 | 27 | 14 | 17 | . | . | . | |||||
| Meadow Brown | 283 | . | . | . | . | . | . | . | . | . | 1 | 15 | 25 | 48 | 79 | 41 | 39 | 13 | 17 | 2 | 1 | 1 | |||||
| Six-spot Burnet | NI | . | . | . | . | . | . | . | . | . | . | . | 4 | 5 | . | . | . | . | . | . | . | . | |||||