
| 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 | 79 | . | . | . | . | . | . | . | . | . | . | 3 | 22 | 20 | 15 | 8 | 6 | 5 | . | . | . | . | . | ||||
| Large Skipper | 39 | . | . | . | . | . | . | . | 11 | 11 | 11 | 2 | 2 | 2 | . | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | NI | . | . | . | 1 | 8 | 6 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | 18 | . | . | . | 3 | 3 | 1 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Clouded Yellow | 15 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 5 | 4 | . | 1 | 3 | ||||
| Brimstone | 34 | 7 | 3 | 1 | . | 1 | 3 | . | . | 1 | . | . | . | . | . | 5 | 5 | . | . | . | 1 | . | 1 | ||||
| Large White | 20 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | 10 | 1 | 4 | . | 1 | . | 1 | . | ||||
| Small White | 24 | . | . | 1 | . | 1 | . | . | 1 | . | . | 1 | 1 | . | 1 | 1 | 11 | 1 | 5 | . | . | . | . | ||||
| Green-veined White | 28 | . | . | . | . | 3 | 4 | . | 1 | . | . | 1 | 3 | . | 1 | . | 1 | 2 | . | 1 | 3 | . | . | ||||
| Orange Tip | 4 | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | NI | . | . | . | . | 5 | 1 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||
| Small Copper | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | 1 | . | ||||
| Brown Argus | 5 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | ||||
| Common Blue | 242 | . | . | . | . | 1 | 30 | 36 | 25 | 5 | 2 | 1 | . | 1 | 4 | 28 | 27 | 19 | 15 | 11 | 4 | . | 1 | ||||
| Holly Blue | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Duke of Burgundy Fritillary | NI | . | . | . | . | 11 | 3 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Red Admiral | 9 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | 2 | 1 | 4 | . | ||||
| Painted Lady | 14 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | 1 | 7 | 1 | 2 | . | 1 | . | ||||
| Small Tortoiseshell | 31 | 1 | . | . | . | . | . | . | 1 | . | 1 | 2 | 5 | 1 | 2 | . | 8 | 2 | 5 | 1 | . | 1 | 1 | ||||
| Peacock | 82 | 2 | 2 | 4 | 1 | 1 | . | . | . | . | . | . | . | 4 | 25 | 29 | 5 | 2 | 1 | . | . | 1 | . | ||||
| Comma | 15 | 2 | . | . | . | . | . | . | . | . | . | 6 | 1 | . | 1 | . | . | . | . | 1 | 2 | 1 | 1 | ||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||
| Silver-washed Fritillary | 11 | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | . | 1 | 4 | 3 | . | . | . | . | . | ||||
| Speckled Wood | 7 | . | . | . | . | . | . | 1 | . | . | . | . | 1 | . | 1 | . | . | . | 1 | 1 | 2 | . | . | ||||
| Marbled White | 477 | . | . | . | . | . | . | . | 1 | 5 | 75 | 119 | 142 | 86 | 38 | 11 | . | . | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 886 | . | . | . | . | . | . | . | . | . | . | 4 | 40 | 247 | 170 | 241 | 82 | 88 | 13 | 1 | . | . | . | ||||
| Meadow Brown | 1648 | . | . | . | . | . | . | . | 37 | 53 | 155 | 61 | 139 | 268 | 88 | 192 | 189 | 227 | 98 | 95 | 36 | 4 | 6 | ||||
| Small Heath | 185 | . | . | . | . | 2 | 17 | 23 | 45 | 25 | 20 | 8 | 6 | . | . | . | . | . | 2 | 11 | 6 | . | . | ||||
| Ringlet | 344 | . | . | . | . | . | . | . | . | 5 | 56 | 82 | 146 | 36 | 9 | 10 | . | . | . | . | . | . | . | ||||