
| 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 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Large Skipper | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | 5 | . | . | . | . | . | 1 | . | 3 | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | 2 | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | ||||||
| Brimstone | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Large White | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 4 | . | 1 | . | . | ||||||
| Small White | NI | 1 | . | . | . | . | 1 | 1 | 2 | . | . | . | . | . | 3 | 4 | 5 | 6 | 4 | . | 4 | ||||||
| Green-veined White | 12 | . | . | . | 2 | 1 | 1 | 1 | 1 | 1 | . | . | . | . | . | 1 | 2 | . | . | . | . | ||||||
| Orange Tip | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 3 | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | NI | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||
| Brown Argus | 17 | . | . | . | . | . | . | . | 11 | 1 | . | . | 1 | . | . | . | . | 2 | . | . | . | ||||||
| Common Blue | 153 | . | . | . | . | . | 1 | 2 | 39 | 26 | . | 2 | 1 | . | . | 1 | . | 4 | 16 | 2 | 12 | ||||||
| Chalk-hill Blue | 407 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 9 | 108 | 111 | 11 | 8 | ||||||
| Red Admiral | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | 1 | . | . | . | ||||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | ||||||
| Small Tortoiseshell | NI | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | 3 | 2 | . | . | . | . | ||||||
| Peacock | 20 | 1 | 1 | 7 | 1 | 3 | . | . | . | . | . | . | . | . | . | . | 3 | . | 2 | . | . | ||||||
| Dark Green Fritillary | 25 | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 8 | 4 | 2 | 1 | . | . | ||||||
| Speckled Wood | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||||||
| Wall Brown | NI | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | 1 | 4 | . | . | ||||||
| Marbled White | 160 | . | . | . | . | . | . | . | . | . | . | . | . | 13 | 42 | 35 | 33 | 3 | . | . | . | ||||||
| Grayling | 19 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 4 | 3 | 3 | . | 1 | ||||||
| Gatekeeper / Hedge Brown | 78 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 7 | 24 | 15 | 11 | . | . | ||||||
| Meadow Brown | 1156 | . | . | . | . | . | . | . | . | . | . | 1 | 14 | 15 | 25 | 50 | 68 | 267 | 229 | 31 | 44 | ||||||
| Small Heath | 521 | . | . | . | . | . | 1 | 3 | 13 | 16 | . | 76 | 68 | 41 | 25 | 2 | 5 | 3 | 9 | 19 | 56 | ||||||