
| 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 | . | . | . | . | . | . | . | . | . | . | . | 2 | 12 | 10 | 11 | 8 | 22 | 14 | 6 | 3 | . | . | . | |||
| Silver-spotted Skipper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||
| Large Skipper | . | . | . | . | . | . | . | . | 4 | 7 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | . | |||
| Dingy Skipper | . | . | . | . | . | 6 | 14 | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Grizzled Skipper | . | . | . | . | 2 | 9 | 6 | 6 | 3 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||
| Brimstone | 2 | . | 4 | 1 | 6 | 1 | . | 6 | . | . | . | . | . | . | . | . | 2 | 6 | 6 | 2 | 14 | 7 | 5 | |||
| Large White | . | . | . | . | . | 1 | . | 1 | 1 | . | . | . | . | 1 | 1 | . | 3 | 4 | 3 | 9 | 2 | 1 | . | |||
| Small White | . | . | . | . | . | 1 | . | 1 | 4 | . | . | . | . | 1 | 1 | 3 | 2 | 3 | 3 | 1 | 1 | . | 1 | |||
| Green-veined White | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | 2 | . | 3 | . | 1 | . | . | . | . | |||
| Orange Tip | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Small Copper | . | . | . | . | . | . | 1 | . | 2 | . | . | . | . | . | . | . | 1 | 1 | . | 1 | . | 1 | . | |||
| Small Blue | . | . | . | . | . | 2 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Brown Argus | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 1 | . | 3 | 1 | 3 | |||
| Common Blue | . | . | . | . | . | 1 | . | 3 | 11 | 8 | 1 | . | . | . | . | . | 6 | 10 | 14 | 13 | 24 | 37 | 27 | |||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 6 | 21 | 13 | . | 5 | 5 | 1 | |||
| Adonis Blue | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | 5 | 1 | |||
| Painted Lady | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 2 | . | 2 | . | . | . | |||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | 1 | . | 1 | 1 | 1 | 1 | . | 1 | 12 | 4 | |||
| Peacock | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 2 | . | . | . | . | . | |||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | 4 | 1 | 2 | . | . | 1 | 6 | 2 | . | . | . | . | . | |||
| Speckled Wood | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | 2 | 3 | 2 | |||
| Marbled White | . | . | . | . | . | . | . | . | . | . | 3 | 7 | 25 | 2 | 3 | 2 | . | . | . | . | . | . | . | |||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | 13 | 6 | 1 | 1 | . | . | . | |||
| Meadow Brown | . | . | . | . | . | . | . | . | 3 | 48 | 86 | 68 | 56 | 36 | 10 | 21 | 74 | 243 | 197 | 105 | 93 | 113 | 65 | |||
| Small Heath | . | . | . | . | . | . | 2 | 22 | 29 | 58 | 90 | 63 | 37 | 35 | 4 | 5 | 13 | 6 | 6 | 4 | 5 | 7 | 1 | |||
| Ringlet | . | . | . | . | . | . | . | . | . | . | 6 | 8 | 20 | 10 | . | 1 | . | . | . | . | . | . | . | |||