
| 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/Essex Skipper | 448 | . | . | . | . | . | . | . | 1 | 60 | 247 | 47 | 65 | 25 | 2 | 1 | . | . | . | . | . | ||||||
| Large Skipper | 118 | . | . | . | . | . | 8 | 17 | 14 | 43 | 4 | 18 | 1 | 2 | . | . | . | . | . | . | . | ||||||
| Brimstone | 4 | . | . | . | 1 | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | ||||||
| Large White | 22 | . | . | 1 | . | . | 2 | . | . | 1 | 1 | . | 5 | 10 | . | 2 | 3 | . | 1 | . | . | ||||||
| Small White | 64 | . | . | 2 | . | . | . | . | . | . | 9 | 9 | 8 | 5 | 2 | 3 | 11 | 2 | 8 | . | . | ||||||
| Green-veined White | 98 | . | 5 | 1 | 2 | 2 | 1 | . | . | . | 2 | 11 | 6 | 24 | 12 | 14 | 5 | 5 | . | . | . | ||||||
| Orange Tip | 27 | . | 8 | . | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brown Hairstreak | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||
| White-letter Hairstreak | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | 1 | 3 | 2 | . | . | ||||||
| Brown Argus | NI | . | . | . | 1 | . | . | . | . | . | . | . | 1 | 13 | . | . | 3 | . | . | . | . | ||||||
| Common Blue | 127 | . | . | . | 7 | 10 | 19 | 2 | . | . | . | 2 | 9 | 29 | 26 | 12 | 3 | . | 5 | . | . | ||||||
| White Admiral | NI | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 9 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 5 | 3 | 7 | . | . | ||||||
| Small Tortoiseshell | 77 | . | . | . | . | . | . | 1 | 6 | 34 | 14 | 7 | 3 | 4 | 4 | 4 | 4 | . | . | . | . | ||||||
| Peacock | 64 | 2 | 3 | . | . | . | 2 | . | . | . | . | 12 | 24 | 9 | 1 | . | . | 1 | 2 | . | . | ||||||
| Comma | 14 | . | . | . | . | . | . | . | . | 1 | . | 1 | 2 | . | . | . | 2 | 3 | 12 | 8 | . | ||||||
| Speckled Wood | 76 | . | . | 2 | . | 1 | 7 | . | 1 | . | . | . | . | 1 | . | 5 | 12 | 19 | 9 | 1 | . | ||||||
| Marbled White | NI | . | . | . | . | . | . | . | . | 1 | 6 | . | . | . | . | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 169 | . | . | . | . | . | . | . | . | . | 34 | 28 | 69 | 30 | 6 | 2 | . | . | . | . | . | ||||||
| Meadow Brown | 246 | . | . | . | . | . | 2 | 18 | 31 | 75 | 47 | 20 | 28 | 14 | . | 1 | . | . | . | . | . | ||||||
| Small Heath | 18 | . | . | 1 | 1 | 3 | 6 | . | . | . | . | . | . | . | 3 | . | 68 | . | . | . | . | ||||||
| Ringlet | 164 | . | . | . | . | . | . | . | 2 | 23 | 89 | 27 | 17 | 6 | . | . | . | . | . | . | . | ||||||
| Narrow-bordered 5-spot Burnet | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Silver Y | NI | . | . | . | . | . | . | . | . | . | . | . | . | 5 | . | . | . | . | . | . | . | ||||||