
| 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 | NI | . | . | . | . | . | . | . | 1 | 1 | . | 5 | 11 | 14 | 21 | 7 | . | . | . | ||||||||
| Large Skipper | 55 | . | . | . | . | . | . | . | 2 | 2 | 7 | 3 | 13 | 4 | 7 | 3 | 1 | . | . | ||||||||
| Dingy Skipper | 11 | . | . | 1 | 4 | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Grizzled Skipper | 9 | . | . | 2 | 1 | . | 2 | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | ||||||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||||
| Brimstone | 142 | 3 | 17 | 14 | 14 | . | 3 | 10 | 5 | 3 | . | . | . | . | 17 | 6 | 3 | 1 | . | ||||||||
| Large White | NI | . | . | . | . | . | 1 | 1 | . | . | . | . | 1 | 6 | 18 | 15 | 2 | . | . | ||||||||
| Small White | NI | . | . | 1 | . | . | 2 | 1 | . | . | . | 2 | 3 | 10 | 24 | 19 | 6 | 5 | . | ||||||||
| Green-veined White | 8 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 2 | 2 | . | 1 | . | ||||||||
| Orange Tip | 4 | . | 1 | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | . | . | . | ||||||||
| Small Blue | 14 | . | . | . | . | . | . | 2 | 1 | 1 | . | . | 3 | . | . | . | 5 | . | . | ||||||||
| Brown Argus | NI | . | . | . | . | . | . | 2 | . | 1 | . | . | . | . | . | 5 | 5 | 3 | 2 | ||||||||
| Common Blue | NI | . | . | . | 3 | . | . | 5 | 1 | 7 | . | . | . | . | 4 | 20 | 7 | 7 | 6 | ||||||||
| Chalk-hill Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | ||||||||
| Adonis Blue | 12 | . | . | . | . | . | 1 | . | 1 | 1 | . | . | . | . | . | 1 | 1 | 1 | 2 | ||||||||
| White Admiral | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | ||||||||
| Red Admiral | 14 | . | . | . | . | . | . | 1 | 1 | . | . | . | 1 | 1 | 2 | 2 | . | . | 1 | ||||||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||||
| Small Tortoiseshell | 26 | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 1 | 2 | . | 3 | 4 | 7 | . | ||||||||
| Peacock | NI | 6 | 3 | 1 | 2 | . | . | . | . | . | . | . | . | 4 | 25 | 5 | . | . | . | ||||||||
| Comma | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||||
| Dark Green Fritillary | NI | . | . | . | . | . | . | . | . | . | 2 | . | 4 | 4 | 2 | . | . | . | . | ||||||||
| Silver-washed Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | ||||||||
| Speckled Wood | 27 | 1 | 1 | . | 1 | 1 | 1 | 5 | . | . | 1 | 1 | . | . | 1 | 5 | 1 | 1 | 1 | ||||||||
| Marbled White | 63 | . | . | . | . | . | . | . | . | 4 | 8 | 13 | 21 | 9 | . | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | 7 | 18 | 8 | 2 | 1 | . | ||||||||
| Meadow Brown | 386 | . | . | . | . | . | . | . | . | 3 | 14 | 28 | 37 | 31 | 37 | 66 | 43 | 28 | 11 | ||||||||
| Small Heath | 164 | . | . | . | 1 | 1 | 7 | 8 | 11 | 10 | 10 | 27 | 23 | 15 | 1 | 1 | 4 | 6 | 4 | ||||||||
| Ringlet | 106 | . | . | . | . | . | . | . | . | 2 | 34 | 36 | 18 | 7 | . | . | 1 | . | . | ||||||||