
| 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 Skipper | 232 | . | . | . | . | . | . | 1 | 1 | 42 | 58 | 50 | 42 | 32 | 16 | 2 | 1 | . | |||||||||
| Large Skipper | 29 | . | . | . | . | . | 6 | 5 | 11 | 16 | . | . | 1 | . | . | . | . | . | |||||||||
| Dingy Skipper | 21 | . | 2 | 17 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 27 | . | 4 | 8 | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | 177 | . | 13 | 13 | 21 | 17 | 3 | 6 | . | 1 | 2 | 13 | 18 | 16 | 8 | 5 | 2 | . | |||||||||
| Large White | 21 | . | . | . | . | 2 | . | . | . | 1 | 2 | 6 | 1 | 4 | 4 | . | . | . | |||||||||
| Small White | 127 | . | . | 4 | 10 | 3 | . | 1 | . | 6 | 4 | 12 | 11 | 12 | 20 | 14 | 4 | 4 | |||||||||
| Green-veined White | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||||
| Orange Tip | 5 | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 3 | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | 6 | . | 1 | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | 1 | |||||||||
| Small Blue | 8 | . | . | 1 | . | 5 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brown Argus | 26 | . | . | . | 5 | 3 | 1 | . | . | . | . | . | . | . | 2 | 3 | 3 | 1 | |||||||||
| Common Blue | 142 | . | . | . | 4 | 6 | 7 | 2 | 5 | . | . | . | . | 5 | 22 | 40 | 26 | 11 | |||||||||
| Chalk-hill Blue | 57 | . | . | . | . | . | . | . | . | . | 12 | 8 | 21 | 17 | . | 1 | . | . | |||||||||
| Adonis Blue | 27 | . | . | . | 3 | 5 | 1 | . | . | . | . | . | . | 1 | . | 8 | 3 | . | |||||||||
| Holly Blue | 7 | . | 2 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||||
| Small Tortoiseshell | 21 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 6 | 5 | 8 | |||||||||
| Peacock | 16 | 3 | . | . | 1 | . | . | . | . | . | . | 2 | 3 | 2 | . | 1 | . | . | |||||||||
| Comma | 6 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||||
| Pearl-bordered Fritillary | 5 | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Dark Green Fritillary | 23 | . | . | . | . | . | . | . | 6 | 1 | 3 | 5 | 4 | 6 | . | . | . | . | |||||||||
| Silver-washed Fritillary | 3 | . | . | . | . | . | . | . | 1 | . | . | 1 | 2 | . | . | . | . | . | |||||||||
| Speckled Wood | 11 | . | . | . | . | . | 1 | . | . | . | 1 | 2 | 1 | 1 | 1 | 1 | . | . | |||||||||
| Marbled White | 321 | . | . | . | . | . | . | 40 | 101 | 83 | 68 | 34 | 32 | 4 | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 117 | . | . | . | . | . | . | . | 1 | 19 | 42 | 27 | 25 | 11 | 2 | . | . | . | |||||||||
| Meadow Brown | 1434 | . | . | . | . | . | 4 | 30 | 34 | 51 | 112 | 199 | 268 | 337 | 204 | 133 | 37 | 35 | |||||||||
| Small Heath | 145 | . | . | . | 2 | 4 | 24 | 36 | 43 | 17 | 11 | 5 | 4 | 1 | . | . | . | . | |||||||||
| Ringlet | 108 | . | . | . | . | . | . | 7 | 43 | 15 | 16 | 6 | 2 | . | . | . | . | . | |||||||||