
| 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 | 86 | . | . | . | . | . | . | . | . | . | 37 | 21 | 8 | 2 | 1 | . | . | . | . | . | |||||||
| Small Skipper | 12 | . | . | . | . | . | . | . | . | . | 8 | . | 1 | . | . | . | . | . | . | . | |||||||
| Essex Skipper | 277 | . | . | . | . | . | . | . | . | . | 105 | 96 | 22 | 2 | . | . | . | . | . | . | |||||||
| Large Skipper | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 2 | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Large White | 8 | . | . | . | . | . | 2 | . | . | . | . | . | 2 | 3 | 2 | . | . | . | . | . | |||||||
| Small White | 37 | . | . | . | . | 1 | 1 | . | . | . | 3 | 12 | 2 | 3 | 3 | 2 | 5 | 2 | 2 | . | |||||||
| Green-veined White | 33 | . | . | 2 | 5 | 1 | 1 | . | . | . | 6 | . | 3 | . | 1 | . | . | 1 | 1 | 2 | |||||||
| Orange Tip | 7 | . | . | 1 | 1 | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | NI | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 13 | . | . | . | 2 | 1 | 1 | . | . | . | . | . | 4 | . | . | 1 | . | . | 1 | 1 | |||||||
| Brown Argus | 25 | . | . | . | 2 | 4 | . | . | . | . | . | . | . | . | 3 | 10 | 2 | . | . | 2 | |||||||
| Common Blue | 89 | . | . | . | . | 10 | 22 | 13 | 1 | 1 | . | . | 4 | 18 | 17 | 6 | 5 | 1 | 1 | 1 | |||||||
| Holly Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||||
| Red Admiral | 46 | . | . | 1 | 1 | . | 8 | 2 | 2 | 1 | 3 | 8 | 7 | 1 | 2 | 2 | 2 | 1 | 2 | 1 | |||||||
| Painted Lady | 14 | . | . | 1 | . | . | 1 | 1 | . | . | 1 | . | . | 5 | 1 | 2 | 1 | . | . | . | |||||||
| Small Tortoiseshell | 20 | 1 | . | . | 3 | . | 1 | . | . | . | 4 | 1 | 2 | . | . | . | 1 | 1 | . | . | |||||||
| Peacock | 35 | 1 | 2 | 1 | 3 | 1 | . | 2 | . | . | . | 2 | 8 | 3 | 1 | 3 | 1 | . | . | . | |||||||
| Comma | 15 | 1 | 1 | . | . | . | . | . | . | . | 2 | 1 | 2 | 1 | 2 | . | 1 | . | 1 | . | |||||||
| Speckled Wood | 84 | . | . | 2 | . | 2 | 2 | 7 | 1 | 4 | 2 | 1 | 3 | 7 | 5 | 4 | 17 | 10 | 7 | 4 | |||||||
| Wall Brown | 47 | . | . | . | 11 | 6 | 3 | . | . | . | . | . | . | 10 | 5 | 2 | 3 | 1 | 1 | . | |||||||
| Gatekeeper / Hedge Brown | 237 | . | . | . | . | . | . | . | . | . | 24 | 91 | 82 | 9 | 15 | 3 | . | . | . | . | |||||||
| Meadow Brown | 1277 | . | . | . | . | . | . | . | 29 | 60 | 256 | 359 | 269 | 116 | 42 | 12 | 13 | . | 4 | 3 | |||||||
| Small Heath | 66 | . | . | . | 4 | 4 | 10 | 6 | 3 | 2 | 4 | . | . | 2 | . | 7 | 12 | 1 | 2 | 4 | |||||||
| Ringlet | 138 | . | . | . | . | . | . | . | 5 | 6 | 61 | 29 | 9 | . | . | . | . | . | . | . | |||||||