
| 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 | . | . | . | . | . | . | . | . | . | 1 | 7 | 13 | 7 | 10 | 11 | 6 | . | . | . | |||||||
| Large Skipper | . | . | . | . | . | 1 | . | 1 | 8 | 5 | 2 | 2 | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | . | . | . | . | 7 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | 4 | . | 1 | 1 | 1 | |||||||
| Large White | . | . | . | . | . | . | 2 | . | . | . | 1 | . | 4 | 6 | 3 | . | 2 | . | . | |||||||
| Small White | . | . | . | . | . | 2 | . | . | . | . | . | 1 | 3 | 2 | 4 | . | . | . | 1 | |||||||
| Green-veined White | . | . | . | . | 3 | 1 | . | . | . | . | . | . | 5 | 3 | 1 | 1 | . | . | 1 | |||||||
| Green Hairstreak | . | . | 1 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | . | . | . | 1 | 2 | 1 | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | |||||||
| Small Blue | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brown Argus | . | . | . | . | 2 | 3 | . | . | 1 | . | . | . | . | . | . | 1 | 2 | . | . | |||||||
| Common Blue | . | . | . | 1 | 2 | 13 | 13 | 19 | 19 | 5 | 5 | . | . | 1 | 3 | 11 | 30 | 16 | 5 | |||||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | . | 13 | 39 | 67 | 58 | 25 | 15 | 3 | 1 | |||||||
| Holly Blue | . | . | . | 1 | 7 | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | |||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | |||||||
| Small Tortoiseshell | . | 1 | . | . | . | . | . | . | . | 4 | 2 | 2 | 16 | 22 | 3 | . | 14 | 9 | 30 | |||||||
| Peacock | 2 | 2 | 2 | 5 | 3 | 1 | . | . | . | . | . | . | . | 5 | 19 | 3 | 3 | . | 2 | |||||||
| Comma | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | 1 | |||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||||
| Speckled Wood | . | . | 3 | . | 1 | 1 | . | . | . | . | . | . | 1 | 2 | 3 | 2 | 9 | . | 4 | |||||||
| Wall Brown | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | 1 | 2 | 2 | 1 | . | . | |||||||
| Marbled White | . | . | . | . | . | . | . | . | 6 | 45 | 60 | 38 | 9 | 4 | 1 | . | . | . | . | |||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | 2 | 6 | 6 | 6 | 3 | 1 | . | . | . | |||||||
| Meadow Brown | . | . | . | . | . | . | . | 3 | 20 | 51 | 121 | 101 | 134 | 232 | 156 | 71 | 51 | 28 | 13 | |||||||
| Small Heath | . | . | . | . | . | 8 | 16 | 21 | 26 | 16 | 17 | 22 | 11 | 5 | 1 | . | 2 | . | . | |||||||
| Ringlet | . | . | . | . | . | . | . | . | 2 | 7 | 13 | 3 | . | . | . | . | . | . | . | |||||||