
| 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 | 154 | . | . | . | . | . | . | . | 4 | 24 | 46 | 22 | 25 | 16 | 10 | . | . | . | . | ||||||||
| Essex Skipper | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||||
| Large Skipper | 43 | . | . | . | . | 1 | 9 | 10 | 15 | 3 | . | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | 59 | 18 | . | 9 | 1 | . | . | . | . | . | 1 | . | 7 | 2 | 1 | . | 1 | . | . | ||||||||
| Large White | NI | . | . | 1 | 6 | 5 | . | 1 | 1 | 2 | 9 | 8 | 11 | 3 | 2 | 1 | 1 | 2 | . | ||||||||
| Small White | 29 | . | 1 | 1 | 1 | . | 2 | . | 1 | . | 3 | 2 | 5 | 5 | . | . | 3 | . | . | ||||||||
| Green-veined White | 137 | . | 1 | 2 | 7 | 2 | . | . | 3 | 3 | 16 | 17 | 23 | 15 | 8 | 6 | 6 | . | . | ||||||||
| Orange Tip | 18 | . | 3 | 7 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | 11 | . | . | . | . | 3 | . | . | . | . | . | . | . | 2 | . | 2 | . | . | 2 | ||||||||
| Common Blue | 32 | . | . | . | . | 1 | 2 | . | . | . | . | . | . | 3 | 1 | 9 | 10 | . | . | ||||||||
| Holly Blue | 5 | . | . | 2 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| White Admiral | 12 | . | . | . | . | . | . | . | 6 | 1 | 3 | 1 | 1 | . | . | . | . | . | . | ||||||||
| Red Admiral | 15 | . | . | . | . | . | . | 3 | 2 | . | 1 | . | . | . | 1 | . | 1 | 2 | 1 | ||||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | ||||||||
| Small Tortoiseshell | 2 | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Peacock | 60 | 10 | 1 | 6 | 4 | 1 | . | . | . | . | . | 4 | 9 | 15 | 3 | 3 | 1 | . | . | ||||||||
| Comma | 46 | 5 | . | . | . | . | . | . | 7 | . | 2 | 2 | 2 | . | . | . | . | 10 | 5 | ||||||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Silver-washed Fritillary | 5 | . | . | . | . | . | . | . | . | . | . | . | 2 | 3 | . | . | . | . | . | ||||||||
| Speckled Wood | 75 | . | . | 2 | 1 | 5 | . | 3 | 1 | . | . | 1 | 5 | 2 | 8 | 6 | 3 | 19 | 2 | ||||||||
| Marbled White | 20 | . | . | . | . | . | . | 3 | 9 | 3 | . | 4 | 1 | . | . | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 797 | . | . | . | . | . | . | . | 5 | 27 | 155 | 309 | 163 | 91 | 41 | 6 | . | . | . | ||||||||
| Meadow Brown | 2065 | . | . | . | . | . | 33 | 383 | 445 | 307 | 331 | 340 | 120 | 62 | 29 | 11 | . | . | . | ||||||||
| Small Heath | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||||
| Ringlet | 517 | . | . | . | . | . | 2 | 93 | 223 | 97 | 66 | 28 | 6 | 2 | . | . | . | . | . | ||||||||
| Six-spot Burnet | NI | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Narrow-bordered 5-spot Burnet | NI | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Chimney Sweeper | NI | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Silver Y | NI | . | . | . | . | 1 | . | 1 | . | . | 2 | 2 | 3 | . | 1 | . | . | 1 | . | ||||||||
| Small Yellow Underwing | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Mother Shipton | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Burnet Companion | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||