
| 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 | ||||||||||||||||||||||||||
| Small Skipper | . | . | . | . | . | 8 | 28 | 67 | 2 | 1 | 3 | 4 | 1 | . | . | . | . | . | ||||||||
| Silver-spotted Skipper | . | . | . | . | . | . | . | . | . | . | 4 | 4 | 1 | . | . | . | . | . | ||||||||
| Large Skipper | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Dingy Skipper | 5 | 9 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Grizzled Skipper | . | 6 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | 30 | 11 | 2 | 1 | 3 | . | 1 | 1 | 1 | 7 | . | 1 | 4 | . | . | . | . | . | ||||||||
| Large White | 3 | . | 1 | 1 | 2 | . | 3 | 21 | 6 | 44 | 17 | 15 | 8 | 5 | 1 | 1 | 1 | . | ||||||||
| Small White | 1 | . | . | 1 | 3 | 2 | . | . | 5 | 16 | 7 | 6 | 1 | 5 | 2 | 2 | 2 | . | ||||||||
| Orange Tip | 19 | 5 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | 1 | 5 | 2 | 1 | 2 | . | . | . | 1 | 2 | 1 | 2 | 2 | 3 | . | 2 | 4 | 3 | ||||||||
| Brown Argus | . | 1 | 7 | 6 | 5 | . | 1 | . | . | . | 2 | 5 | . | 1 | . | . | . | . | ||||||||
| Common Blue | . | 22 | 29 | 22 | 23 | 13 | 17 | 5 | 2 | 6 | 11 | 23 | 34 | 9 | . | . | . | . | ||||||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | 11 | 21 | 4 | 10 | 2 | 4 | . | . | . | . | ||||||||
| Holly Blue | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | 2 | 1 | ||||||||
| Small Tortoiseshell | . | . | . | . | . | 1 | 8 | 14 | 1 | 3 | . | . | . | 1 | 1 | 1 | . | . | ||||||||
| Peacock | 1 | 1 | 1 | 1 | . | . | . | . | 3 | 21 | 1 | . | 1 | . | . | . | . | . | ||||||||
| Comma | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | ||||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | 2 | . | 1 | . | . | . | . | . | . | . | . | ||||||||
| Speckled Wood | 6 | . | 1 | . | 3 | 1 | 6 | 1 | . | 3 | 1 | . | . | 4 | 4 | 1 | 3 | . | ||||||||
| Wall Brown | . | 1 | 17 | 6 | 1 | . | . | . | . | 1 | 5 | 23 | 17 | 9 | . | . | . | . | ||||||||
| Marbled White | . | . | . | . | . | . | 12 | 25 | 2 | 2 | 1 | . | . | . | . | . | . | . | ||||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | 4 | 5 | 8 | 8 | 4 | . | . | . | . | . | . | ||||||||
| Meadow Brown | . | . | . | . | 14 | 68 | 110 | 167 | 89 | 92 | 38 | 36 | 28 | 18 | 5 | 1 | 3 | . | ||||||||
| Small Heath | . | 10 | 22 | 24 | 61 | 77 | 119 | 90 | 9 | 13 | 2 | 8 | 13 | 15 | 27 | 28 | 47 | 9 | ||||||||
| Ringlet | . | . | . | . | . | . | 8 | 11 | 2 | 5 | . | . | . | . | . | . | . | . | ||||||||