
| 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 | . | . | . | . | . | . | . | . | . | . | . | 41 | 24 | 69 | 46 | 10 | 9 | 4 | . | . | . | . | ||||
| Silver-spotted Skipper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 30 | 41 | 16 | 4 | 3 | . | . | . | ||||
| Large Skipper | . | . | . | . | . | . | . | . | . | 1 | 7 | 6 | 5 | 8 | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | . | . | 5 | 2 | . | 1 | . | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | . | . | 5 | 6 | . | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 1 | 7 | 3 | 2 | 4 | . | . | 1 | . | . | . | . | . | 1 | 8 | . | . | 1 | 1 | 2 | . | . | ||||
| Large White | . | . | . | 1 | 1 | . | . | . | . | . | . | . | 3 | 5 | 2 | 2 | 1 | 1 | 2 | 2 | . | . | ||||
| Small White | . | . | . | . | . | . | 1 | . | . | . | . | 5 | 2 | 2 | 3 | 2 | 3 | 1 | 11 | 2 | . | . | ||||
| Green-veined White | 1 | 2 | 1 | 1 | . | . | . | . | 1 | . | . | . | . | 1 | 4 | . | . | 2 | 3 | 4 | . | . | ||||
| Orange Tip | . | 4 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | . | . | 3 | 2 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brown Argus | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | 8 | 3 | . | . | . | ||||
| Common Blue | . | . | . | 3 | 2 | 6 | 9 | 9 | 11 | 5 | 3 | . | . | . | . | . | . | 63 | 33 | 10 | 3 | . | ||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 17 | 44 | 53 | 21 | 1 | . | . | . | . | ||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | . | . | . | 1 | 1 | 3 | ||||
| Small Tortoiseshell | . | 1 | . | 1 | . | . | . | . | . | . | . | 1 | 2 | 1 | 2 | 2 | 2 | 1 | . | 4 | 1 | 2 | ||||
| Peacock | 3 | 3 | . | . | . | . | . | . | . | . | . | . | . | 1 | 5 | 2 | 2 | . | 1 | . | . | . | ||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | 1 | 1 | 5 | 9 | 2 | 8 | 4 | . | . | . | . | . | . | . | ||||
| Speckled Wood | 2 | 2 | . | . | . | . | . | 1 | 2 | 2 | 1 | . | . | 1 | . | 1 | 2 | 10 | 4 | 4 | 6 | 6 | ||||
| Marbled White | . | . | . | . | . | . | . | . | . | . | 53 | 79 | 47 | 56 | 16 | 1 | . | . | . | . | . | . | ||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 3 | 26 | 40 | 100 | 86 | 75 | . | 3 | . | . | . | ||||
| Meadow Brown | . | . | . | . | . | . | . | . | 10 | 9 | 40 | 92 | 129 | 152 | 488 | 254 | 225 | 339 | 198 | 4 | 15 | 18 | ||||
| Small Heath | . | . | . | . | . | 5 | 3 | 5 | 15 | 10 | 21 | 42 | 21 | 3 | 1 | . | . | 4 | 5 | 1 | 7 | 3 | ||||
| Ringlet | . | . | . | . | . | . | . | . | 3 | 7 | 44 | 90 | 36 | 7 | . | . | . | . | . | . | . | . | ||||