
| 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 | NI | . | . | . | . | . | . | . | . | . | . | 7 | 27 | 41 | 61 | 64 | 37 | . | . | . | |||||||
| Large Skipper | 3 | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | 14 | . | . | . | . | . | . | 6 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 13 | . | . | . | . | . | . | 2 | 7 | 2 | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 27 | 12 | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | 4 | . | . | . | |||||||
| Large White | 37 | . | . | . | . | 1 | 3 | 4 | 1 | . | . | . | . | 6 | 4 | 7 | 3 | 1 | . | 1 | |||||||
| Small White | 40 | . | . | . | 3 | 2 | 2 | 2 | 1 | 3 | . | . | . | 5 | 1 | 10 | 5 | . | . | . | |||||||
| Green-veined White | 16 | . | . | . | . | 5 | 5 | . | . | 1 | . | . | . | 1 | 1 | . | 1 | . | . | . | |||||||
| Orange Tip | 40 | . | 2 | . | 8 | 8 | 12 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Small Copper | 20 | . | . | . | . | . | 1 | 1 | 1 | . | 1 | . | . | . | . | 2 | 3 | 3 | 1 | 1 | |||||||
| Brown Argus | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||
| Common Blue | 90 | . | . | . | . | . | . | 5 | 23 | 12 | 6 | 2 | 1 | 1 | . | 3 | 8 | 5 | 2 | 1 | |||||||
| Holly Blue | 19 | . | . | . | 3 | 3 | 2 | 2 | . | . | . | . | . | . | . | . | 5 | . | . | . | |||||||
| White Admiral | 4 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | 1 | . | . | . | . | |||||||
| Small Tortoiseshell | 19 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 2 | 5 | 6 | |||||||
| Peacock | 71 | 12 | 1 | 1 | 2 | 3 | 6 | . | 1 | . | . | . | . | . | 1 | 12 | 15 | . | . | . | |||||||
| Comma | 19 | 4 | . | . | 1 | . | . | . | . | . | . | . | 2 | . | 2 | 3 | . | . | 1 | 4 | |||||||
| Speckled Wood | 61 | . | . | 3 | 1 | 9 | 5 | 4 | . | 2 | 2 | 1 | . | . | . | 7 | 2 | 7 | 3 | . | |||||||
| Marbled White | 11 | . | . | . | . | . | . | . | . | . | . | . | 5 | 3 | 3 | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 233 | . | . | . | . | . | . | . | . | . | . | . | . | 9 | 27 | 76 | 70 | 8 | . | . | |||||||
| Meadow Brown | 325 | . | . | . | . | . | . | . | . | . | 5 | 53 | 41 | 53 | 86 | 33 | 32 | 2 | . | . | |||||||
| Small Heath | 48 | . | . | . | . | . | . | 6 | 9 | 6 | 6 | 7 | 1 | 2 | 1 | . | . | 1 | . | . | |||||||
| Ringlet | 220 | . | . | . | . | . | . | . | . | . | . | 9 | 55 | 97 | 43 | 4 | 8 | . | . | . | |||||||