
| 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 | NI | . | . | . | . | . | . | . | . | . | . | 10 | 46 | 65 | 52 | 30 | 6 | 1 | 2 | 1 | . | . | |||||
| Silver-spotted Skipper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||
| Large Skipper | 15 | . | . | . | . | . | . | . | . | 2 | 4 | 7 | . | 2 | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 27 | . | . | 4 | 16 | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 27 | . | 1 | 4 | 6 | . | 6 | 2 | 5 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 98 | 4 | 9 | 7 | 13 | 8 | 5 | . | 8 | . | 1 | . | . | 2 | 5 | 6 | . | 6 | 4 | 4 | . | 5 | |||||
| Large White | 11 | . | . | . | . | 1 | . | . | . | . | . | 1 | . | 2 | . | . | 3 | . | 4 | . | . | . | |||||
| Small White | 33 | . | . | . | . | 3 | . | . | . | . | . | . | 1 | 2 | 1 | 4 | 11 | 4 | 2 | . | 4 | 1 | |||||
| Orange Tip | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | NI | . | 1 | 2 | 9 | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||
| Small Blue | 7 | . | . | . | 2 | . | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brown Argus | 10 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | 4 | 2 | 2 | . | |||||
| Common Blue | 59 | . | . | . | . | 1 | 3 | 1 | 2 | 1 | 4 | . | . | . | . | 2 | 11 | 4 | 15 | 10 | 4 | 1 | |||||
| Chalk-hill Blue | 104 | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 22 | 31 | 29 | 9 | 6 | 3 | . | |||||
| Adonis Blue | 80 | . | . | . | . | . | 15 | 8 | 8 | . | 1 | . | . | . | . | . | . | . | 4 | 11 | 19 | 11 | |||||
| Holly Blue | 5 | . | . | 1 | 3 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Duke of Burgundy Fritillary | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Red Admiral | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||
| Small Tortoiseshell | 14 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 2 | 2 | 5 | . | |||||
| Peacock | 7 | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | 3 | 2 | . | . | . | . | . | . | |||||
| Comma | NI | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Dark Green Fritillary | 258 | . | . | . | . | . | . | . | . | 1 | 6 | 33 | 74 | 55 | 36 | 31 | 19 | 3 | . | . | . | . | |||||
| Speckled Wood | 2 | . | . | . | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Marbled White | 339 | . | . | . | . | . | . | . | . | 8 | 20 | 89 | 155 | 51 | 11 | 5 | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 132 | . | . | . | . | . | . | . | . | . | . | . | 18 | 34 | 42 | 24 | 12 | 2 | . | . | . | . | |||||
| Meadow Brown | 2307 | . | . | . | . | . | . | 1 | . | 26 | 46 | 70 | 61 | 167 | 204 | 418 | 333 | 376 | 306 | 113 | 118 | 60 | |||||
| Small Heath | 274 | . | . | . | . | 2 | 10 | 4 | 9 | 9 | 28 | 52 | 47 | 38 | 24 | 8 | 4 | 2 | 4 | 7 | 12 | 11 | |||||
| Ringlet | 84 | . | . | . | . | . | . | . | . | 4 | 4 | 29 | 38 | 7 | 2 | . | . | . | . | . | . | . | |||||