
| 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 | 6 | . | . | . | . | . | . | . | . | . | 2 | 5 | 1 | . | . | . | . | . | . | . | . | ||||||
| Small Skipper | 6 | . | . | . | . | . | . | . | . | . | . | . | 4 | 1 | . | . | . | . | . | . | . | ||||||
| Silver-spotted Skipper | 182 | . | . | . | . | . | . | . | . | . | . | . | 8 | 50 | 53 | 52 | 11 | 8 | . | . | . | ||||||
| Large Skipper | NI | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | 27 | . | . | . | 11 | 3 | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | NI | . | . | 12 | 9 | . | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | NI | 5 | 10 | 8 | 8 | 7 | 4 | 5 | 3 | . | 2 | 2 | 42 | 45 | 18 | 9 | 5 | . | . | . | . | ||||||
| Large White | NI | . | . | . | . | 1 | . | . | . | . | . | 8 | 7 | 7 | 1 | 5 | . | . | . | . | . | ||||||
| Small White | 95 | . | . | . | . | 4 | . | 2 | . | . | 4 | 4 | 9 | 20 | 6 | 11 | 3 | 7 | 9 | 3 | 6 | ||||||
| Green-veined White | 13 | . | . | 2 | . | 1 | . | . | . | . | 2 | . | 3 | . | . | 3 | . | . | . | . | 1 | ||||||
| Orange Tip | NI | . | . | 2 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | NI | . | . | . | 5 | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | ||||||
| Small Blue | NI | . | . | . | . | 1 | . | 5 | 3 | . | . | . | 1 | 1 | . | . | . | . | . | . | . | ||||||
| Brown Argus | 170 | . | . | . | 6 | 19 | 1 | 7 | 4 | . | . | . | 10 | 28 | 17 | 38 | 17 | 9 | 1 | . | 1 | ||||||
| Common Blue | NI | . | . | . | . | 3 | 9 | 17 | 11 | 4 | . | . | 7 | 22 | 31 | 45 | 32 | 28 | 9 | . | 2 | ||||||
| Chalk-hill Blue | 317 | . | . | . | . | . | . | . | . | . | 1 | 12 | 77 | 70 | 41 | 35 | 26 | 12 | . | . | . | ||||||
| Adonis Blue | NI | . | . | . | . | 7 | 3 | 11 | 6 | . | . | . | . | 1 | 3 | 17 | 30 | 20 | 9 | 3 | 2 | ||||||
| Holly Blue | NI | . | 1 | 4 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 16 | . | . | . | . | . | . | . | . | 3 | 2 | . | 1 | . | 1 | . | 1 | 2 | . | 2 | 2 | ||||||
| Painted Lady | 3 | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | ||||||
| Small Tortoiseshell | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | ||||||
| Peacock | NI | . | 1 | 2 | 1 | . | . | . | . | . | . | . | 1 | 4 | . | . | . | . | . | . | . | ||||||
| Comma | 11 | 1 | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | 2 | 2 | 2 | ||||||
| Dark Green Fritillary | 29 | . | . | . | . | . | . | . | . | 3 | 9 | 6 | 4 | 1 | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 10 | . | . | 2 | . | . | . | . | 1 | . | . | . | 1 | . | . | 2 | 2 | 1 | . | . | . | ||||||
| Marbled White | 61 | . | . | . | . | . | . | . | . | 15 | 18 | 17 | . | . | . | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | 2 | 16 | 21 | 17 | 5 | 2 | 3 | . | . | . | . | ||||||
| Meadow Brown | 1375 | . | . | . | . | . | . | . | . | 15 | 47 | 84 | 132 | 188 | 192 | 214 | 162 | 125 | 73 | 13 | 9 | ||||||
| Small Heath | 677 | . | . | . | 11 | 19 | 32 | 40 | 104 | 71 | 55 | 56 | 3 | 4 | 6 | 10 | 15 | 28 | 37 | 10 | 3 | ||||||
| Ringlet | 14 | . | . | . | . | . | . | . | . | 5 | 3 | 2 | . | . | . | . | . | . | . | . | . | ||||||
| Six-spot Burnet | NI | . | . | . | . | . | . | . | . | . | 2 | . | 59 | 58 | 18 | 8 | 6 | 1 | . | . | . | ||||||
| The Vapourer | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||
| Silver Y | NI | . | . | . | . | 2 | . | 2 | . | . | . | . | 4 | 1 | 1 | 1 | . | . | . | 3 | 4 | ||||||
| The Cinnabar | NI | . | . | 1 | 8 | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Burnet Companion | NI | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||