
| 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 | 350 | . | . | . | . | . | . | . | 4 | 18 | 17 | 78 | 24 | 94 | 50 | 1 | . | . | . | . | . | ||||||
| Essex Skipper | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||
| Large Skipper | 98 | . | . | . | . | 2 | 9 | 28 | 31 | 9 | 2 | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | NI | 13 | 1 | . | . | . | . | . | . | . | . | . | 2 | 5 | . | . | . | 8 | 2 | . | 1 | ||||||
| Large White | 42 | . | . | 2 | . | 2 | . | . | . | . | . | 4 | 4 | 9 | 3 | 3 | . | . | 2 | . | 1 | ||||||
| Small White | 88 | . | . | . | 1 | . | . | . | . | . | 2 | 7 | 2 | 17 | 12 | 2 | . | . | . | 1 | . | ||||||
| Green-veined White | 249 | . | 3 | 9 | 9 | 7 | 8 | 1 | . | 2 | 2 | 29 | 17 | 40 | 22 | 4 | 2 | 2 | 4 | 5 | . | ||||||
| Orange Tip | 69 | 5 | 10 | 13 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 64 | . | . | 1 | 8 | 6 | 6 | . | . | . | . | . | . | . | 8 | 8 | 11 | 2 | 2 | . | 1 | ||||||
| Common Blue | 279 | . | . | . | 7 | 44 | 50 | 32 | 6 | 1 | . | . | . | 8 | 8 | 32 | 19 | 5 | 4 | . | . | ||||||
| White Admiral | 14 | . | . | . | . | . | . | . | 5 | 3 | . | 2 | 1 | 1 | . | . | . | . | . | . | . | ||||||
| Red Admiral | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | . | . | ||||||
| Painted Lady | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Tortoiseshell | NI | 1 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Peacock | 52 | 14 | 5 | 3 | 2 | 1 | 1 | . | . | . | . | . | 3 | 4 | 3 | . | . | . | . | . | . | ||||||
| Comma | 10 | 5 | 1 | . | . | . | . | . | 2 | 2 | 1 | 4 | 1 | . | . | . | . | 11 | 36 | 44 | 13 | ||||||
| Silver-washed Fritillary | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||
| Speckled Wood | 36 | 1 | 1 | 1 | . | 1 | 5 | 5 | 1 | . | . | . | . | 1 | 3 | 18 | 18 | 17 | 21 | 12 | 6 | ||||||
| Marbled White | 30 | . | . | . | . | . | . | . | 4 | 11 | 5 | 6 | 2 | 2 | 1 | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 3224 | . | . | . | . | . | . | . | . | 9 | 38 | 253 | 223 | 560 | 465 | 26 | 4 | . | . | . | . | ||||||
| Meadow Brown | 2444 | . | . | . | . | . | 3 | 193 | 527 | 430 | 166 | 258 | 163 | 195 | 94 | 12 | 2 | . | . | . | . | ||||||
| Small Heath | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Ringlet | 676 | . | . | . | . | . | . | 4 | 165 | 241 | 121 | 64 | 10 | 14 | 2 | . | . | . | . | . | . | ||||||
| The Forester | NI | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Six-spot Burnet | NI | . | . | . | . | . | . | 5 | 11 | 7 | 3 | 13 | . | . | . | . | . | . | . | . | . | ||||||
| Five-spot Burnet | NI | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Chimney Sweeper | NI | . | . | . | . | . | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Silver Y | NI | . | . | . | . | . | . | 1 | . | 1 | . | 6 | . | 2 | 3 | 4 | . | 1 | 1 | . | . | ||||||
| The Cinnabar | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Yellow Underwing | NI | . | . | 8 | 2 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Burnet Companion | NI | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||