
| 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 | . | . | . | . | . | . | . | . | . | . | 4 | 4 | 30 | 35 | 13 | 17 | 12 | 10 | 1 | . | ||||||
| Large Skipper | 77 | . | . | . | . | . | . | . | 4 | 3 | 7 | 11 | 7 | 14 | 3 | . | 10 | . | . | . | . | ||||||
| Dingy Skipper | 20 | . | . | . | 1 | 7 | 7 | 2 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | 28 | . | 1 | 1 | 3 | 9 | 8 | 3 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 252 | 2 | 9 | 10 | 9 | 12 | 14 | 1 | 3 | 3 | . | 1 | 3 | . | 1 | 8 | 55 | 31 | 10 | 28 | 24 | ||||||
| Large White | 24 | . | . | . | 3 | 1 | 1 | . | 1 | . | . | . | . | 3 | . | . | 4 | 3 | 1 | 3 | . | ||||||
| Small White | 299 | . | . | 4 | 6 | 9 | 11 | 2 | 8 | 4 | . | . | 2 | 17 | 37 | 43 | 49 | 38 | 17 | 16 | . | ||||||
| Green-veined White | 26 | . | 1 | 1 | . | 2 | . | 3 | 1 | 1 | . | . | . | 5 | 4 | . | 1 | 2 | . | . | . | ||||||
| Orange Tip | 15 | . | 3 | . | 2 | 4 | 4 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 16 | . | . | . | 1 | 3 | 8 | 1 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | ||||||
| Small Copper | 42 | . | . | . | 1 | 7 | 11 | 1 | 1 | 3 | . | . | 1 | 3 | 4 | 1 | 2 | 1 | . | . | 1 | ||||||
| Small Blue | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brown Argus | 6 | . | . | . | . | . | . | 1 | . | 1 | . | 1 | . | . | . | . | . | . | 1 | . | . | ||||||
| Common Blue | 43 | . | . | . | . | 1 | 1 | 2 | 9 | 9 | 2 | 1 | 2 | . | 1 | 1 | 1 | 3 | 1 | . | 4 | ||||||
| Chalk-hill Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||
| Holly Blue | 3 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||
| Red Admiral | 3 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | . | ||||||
| Small Tortoiseshell | 159 | 4 | 2 | 2 | . | . | . | . | . | . | 1 | 8 | 23 | 19 | 3 | 1 | . | 4 | 1 | 33 | 17 | ||||||
| Peacock | 45 | 4 | 6 | 1 | . | 2 | . | . | . | . | . | . | . | . | 11 | 3 | 7 | 4 | 1 | . | . | ||||||
| Comma | 26 | 4 | 1 | 1 | 2 | . | . | . | . | . | . | 1 | . | 7 | . | 1 | 1 | . | . | . | 1 | ||||||
| Small Pearl-bordered Fritillary | 2 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Dark Green Fritillary | 47 | . | . | . | . | . | . | . | . | . | 6 | 9 | 4 | 12 | . | . | 2 | . | . | . | . | ||||||
| Speckled Wood | 181 | 1 | . | 1 | 1 | 10 | 7 | 2 | 4 | 9 | 10 | 10 | 6 | 5 | . | 10 | 23 | 16 | 12 | 15 | 12 | ||||||
| Wall Brown | 124 | . | . | . | . | . | . | 5 | 1 | . | . | . | . | 2 | . | 3 | 44 | 42 | 24 | 1 | . | ||||||
| Gatekeeper / Hedge Brown | 302 | . | . | . | . | . | . | . | . | . | . | 1 | . | 24 | 79 | 67 | 31 | 44 | 4 | . | . | ||||||
| Meadow Brown | 2284 | . | . | . | . | . | . | 1 | 17 | 20 | 142 | 286 | 150 | 296 | 180 | 140 | 245 | 143 | 108 | 45 | 24 | ||||||
| Small Heath | 343 | . | . | . | . | . | 7 | 27 | 24 | 41 | 56 | 61 | 23 | 18 | . | . | 2 | 2 | 6 | 3 | 2 | ||||||
| Ringlet | 16 | . | . | . | . | . | . | . | . | . | . | 3 | 3 | 5 | . | . | . | . | . | . | . | ||||||