
| 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 | 202 | . | . | . | . | . | . | . | 2 | . | . | 27 | 75 | 75 | 12 | 6 | 3 | 1 | . | . | |||||||
| Essex Skipper | 30 | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | 26 | . | . | . | . | . | |||||||
| Large Skipper | 5 | . | . | . | . | . | . | . | 2 | . | . | 1 | 1 | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 2 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 10 | 1 | 1 | 2 | 1 | . | . | . | . | . | . | . | 1 | 2 | . | 1 | 1 | . | . | . | |||||||
| Large White | 8 | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 5 | . | . | . | . | . | |||||||
| Small White | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 2 | 6 | 1 | 3 | 3 | 1 | |||||||
| Green-veined White | 8 | . | . | . | . | . | 1 | . | . | . | . | . | 1 | 3 | . | 2 | . | . | 1 | . | |||||||
| Orange Tip | 3 | . | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 5 | . | . | . | . | 2 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||
| Brown Argus | 4 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | . | 2 | . | . | |||||||
| Common Blue | NI | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 7 | 2 | 9 | 13 | 10 | 4 | |||||||
| Chalk-hill Blue | 476 | . | . | . | . | . | . | . | . | . | . | . | 1 | 22 | 100 | 149 | 110 | 64 | 30 | . | |||||||
| Holly Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||
| Red Admiral | 11 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 5 | 3 | . | 1 | . | . | |||||||
| Small Tortoiseshell | 25 | . | . | . | 2 | 2 | . | . | . | . | . | 4 | 2 | 6 | 1 | 1 | . | . | 3 | 4 | |||||||
| Peacock | 42 | . | 1 | 1 | . | 1 | . | . | . | . | . | . | . | 2 | 15 | 10 | 10 | 2 | . | . | |||||||
| Marbled White | 322 | . | . | . | . | . | . | . | . | . | 102 | 61 | 91 | 46 | 19 | 3 | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 268 | . | . | . | . | . | . | . | . | . | 1 | 14 | 26 | 46 | 112 | 32 | 23 | 11 | 3 | . | |||||||
| Meadow Brown | 386 | . | . | . | . | . | . | . | 4 | 10 | 37 | 18 | 60 | 47 | 38 | 41 | 49 | 35 | 43 | 2 | |||||||
| Small Heath | NI | . | . | . | . | . | 4 | 14 | 12 | 12 | 5 | 8 | 2 | 7 | . | . | 1 | 13 | 31 | 30 | |||||||
| Ringlet | 46 | . | . | . | . | . | . | . | . | 1 | 10 | 10 | 23 | 2 | . | . | . | . | . | . | |||||||