
| 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 | 294 | . | . | . | . | . | . | . | . | . | . | . | 3 | 3 | 46 | 63 | 43 | 101 | 30 | 2 | . | . | . | ||||
| Large Skipper | 25 | . | . | . | . | . | . | . | . | . | 1 | 2 | 6 | 10 | . | 6 | . | . | . | . | . | . | . | ||||
| Dingy Skipper | 4 | . | . | . | . | . | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | 88 | . | . | 1 | 4 | 13 | 28 | 21 | 5 | 4 | 5 | 2 | 3 | 1 | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 41 | 3 | 2 | 5 | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | 9 | 11 | . | 2 | . | . | ||||
| Large White | 36 | . | . | . | 1 | 4 | 8 | . | 2 | . | 1 | . | 2 | . | 3 | 5 | 2 | 2 | 6 | . | . | . | . | ||||
| Small White | 11 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 7 | . | 1 | . | . | ||||
| Green-veined White | 49 | . | . | . | 7 | 4 | 5 | 4 | 4 | . | 1 | . | . | . | 2 | 4 | 8 | 5 | 4 | 1 | . | . | . | ||||
| Orange Tip | 8 | . | 1 | 2 | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | . | . | ||||
| Small Copper | 26 | . | . | . | . | . | 3 | 2 | . | 1 | . | . | . | . | . | . | . | 2 | 3 | 8 | 7 | . | . | ||||
| Common Blue | 25 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 5 | 6 | 8 | 5 | . | ||||
| Holly Blue | 11 | . | 1 | . | 2 | 2 | 1 | 1 | 1 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | ||||
| Duke of Burgundy Fritillary | 24 | . | . | . | 4 | 8 | 7 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| White Admiral | 22 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 2 | 6 | 4 | 1 | . | . | . | . | . | ||||
| Red Admiral | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | 1 | ||||
| Small Tortoiseshell | 16 | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | 4 | 1 | 4 | 2 | ||||
| Peacock | 172 | 4 | 24 | 20 | 6 | 2 | . | . | . | . | . | . | . | . | . | 1 | 29 | 32 | 17 | . | 1 | . | . | ||||
| Comma | 38 | 2 | 2 | . | . | . | 1 | . | . | . | . | . | . | . | 4 | . | . | 3 | 1 | . | 1 | 1 | 13 | ||||
| Small Pearl-bordered Fritillary | 3 | . | . | . | . | . | . | . | 1 | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||
| Pearl-bordered Fritillary | 23 | . | . | . | . | 8 | 7 | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Silver-washed Fritillary | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 4 | . | . | . | . | ||||
| Speckled Wood | 247 | . | 11 | 22 | 23 | 11 | 10 | 4 | 2 | 3 | 5 | 7 | 8 | 1 | 3 | . | 11 | 15 | 12 | 22 | 11 | 19 | 16 | ||||
| Marbled White | 132 | . | . | . | . | . | . | . | . | . | . | . | 15 | 31 | 50 | 28 | 5 | 7 | 2 | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 731 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 25 | 76 | 214 | 247 | 146 | 20 | 2 | . | . | ||||
| Meadow Brown | 1409 | . | . | . | . | . | . | . | . | . | 5 | 8 | 180 | 362 | 329 | 140 | 194 | 145 | 44 | 2 | . | . | . | ||||
| Small Heath | 37 | . | . | . | . | 3 | 5 | 10 | 3 | 1 | . | 2 | 10 | . | . | 1 | 1 | . | . | . | 1 | . | . | ||||
| Ringlet | 767 | . | . | . | . | . | . | . | . | . | . | . | 127 | 224 | 241 | 138 | 22 | 15 | . | . | . | . | . | ||||