
| 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 | 100 | . | . | . | . | . | . | . | 3 | 17 | 14 | 21 | 19 | 3 | 3 | 3 | . | . | . | . | |||||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||
| Large Skipper | 31 | . | . | . | . | . | 1 | 9 | 6 | 7 | . | . | . | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | 6 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 2 | 1 | 1 | . | |||||||
| Brimstone | 34 | 4 | 10 | 3 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||||||
| Large White | 59 | . | . | . | 1 | 6 | 5 | 5 | . | 1 | 2 | 7 | 8 | 4 | 3 | 3 | 1 | 1 | 1 | . | |||||||
| Small White | 44 | . | 1 | . | . | 2 | . | 1 | . | 2 | . | 11 | 4 | 5 | 8 | 4 | . | 1 | 1 | . | |||||||
| Green-veined White | 145 | . | 4 | . | 8 | 9 | 6 | 3 | . | . | 10 | 9 | 13 | 18 | 20 | 13 | 3 | 5 | 3 | . | |||||||
| Orange Tip | 27 | . | 4 | 6 | 6 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Purple Hairstreak | 8 | . | . | . | . | . | . | . | . | . | . | 1 | . | 3 | 2 | . | . | . | . | . | |||||||
| Small Copper | 14 | . | . | . | . | . | 2 | . | . | . | . | . | . | 1 | 3 | 5 | . | 1 | . | . | |||||||
| Common Blue | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||
| White Admiral | 14 | . | . | . | . | . | . | . | . | 2 | 2 | 8 | . | . | . | . | . | . | . | . | |||||||
| Red Admiral | 6 | . | 1 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | 1 | . | |||||||
| Painted Lady | 3 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 2 | . | . | . | . | . | |||||||
| Small Tortoiseshell | 4 | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | 1 | . | . | . | . | |||||||
| Peacock | 128 | 12 | 6 | 12 | 11 | . | 1 | 1 | . | . | . | . | 4 | 36 | 13 | 7 | 1 | 1 | . | . | |||||||
| Comma | 39 | 9 | . | . | . | . | . | 1 | . | 1 | 4 | 2 | 1 | 2 | 1 | . | . | . | 6 | 2 | |||||||
| Silver-washed Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Speckled Wood | 61 | . | . | . | . | 3 | 3 | 5 | 2 | . | . | . | . | 3 | 3 | 9 | 8 | 8 | 8 | 1 | |||||||
| Marbled White | 76 | . | . | . | . | . | . | . | 6 | 19 | 21 | 8 | 1 | . | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 496 | . | . | . | . | . | . | . | . | 6 | 64 | 109 | 129 | 86 | 49 | 24 | . | . | . | . | |||||||
| Meadow Brown | 5289 | . | . | . | . | . | 1 | 151 | 697 | 1239 | 529 | 518 | 378 | 136 | 65 | 18 | 1 | . | . | . | |||||||
| Small Heath | 12 | . | . | . | . | 1 | 2 | 5 | 1 | . | . | . | . | . | 2 | 1 | . | . | . | . | |||||||
| Ringlet | 446 | . | . | . | . | . | 2 | . | 74 | 154 | 61 | 20 | 18 | 1 | . | . | . | . | . | . | |||||||
| Six-spot Burnet | NI | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | |||||||
| Five-spot Burnet | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||||
| Chimney Sweeper | NI | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Silver Y | NI | . | . | . | . | . | . | 1 | 1 | 8 | . | 1 | . | 1 | . | 18 | 14 | 8 | 1 | . | |||||||
| The Cinnabar | NI | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||