
| 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 | . | . | . | . | . | . | . | . | 8 | 6 | 5 | 3 | 6 | 3 | . | . | . | . | . | . | ||||||
| Silver-spotted Skipper | 96 | . | . | . | . | . | . | . | . | . | . | . | . | . | 34 | 59 | 2 | 1 | . | . | . | ||||||
| Large Skipper | 12 | . | . | . | . | . | 1 | 5 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | NI | . | . | . | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | . | ||||||
| Brimstone | 30 | 2 | 1 | 2 | . | 2 | 1 | 1 | 3 | . | . | . | . | 3 | 3 | 1 | 1 | 1 | . | . | . | ||||||
| Large White | 6 | . | . | . | . | . | . | . | . | 2 | . | . | 1 | . | . | 2 | . | . | . | . | . | ||||||
| Small White | 14 | . | . | 1 | 1 | . | . | . | . | 2 | . | 2 | . | 1 | . | . | 2 | 2 | . | . | . | ||||||
| Green-veined White | NI | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 3 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 81 | . | . | 1 | 1 | 3 | 2 | 1 | 2 | 5 | 10 | 6 | 2 | 4 | 6 | 3 | 1 | 2 | 8 | 14 | 8 | ||||||
| Brown Argus | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | ||||||
| Common Blue | 161 | . | . | . | 1 | 11 | 7 | 11 | 1 | . | . | . | 2 | 5 | 6 | 80 | 13 | 4 | 2 | 3 | 1 | ||||||
| Chalk-hill Blue | 465 | . | . | . | . | . | . | . | . | . | 9 | 40 | 51 | 156 | 118 | 25 | 44 | 21 | 1 | . | . | ||||||
| Adonis Blue | 55 | . | . | . | . | 6 | 2 | 2 | . | . | . | . | . | . | 1 | 31 | 3 | 3 | . | . | . | ||||||
| Red Admiral | 21 | . | . | . | 2 | . | . | . | . | 1 | 1 | . | 1 | 3 | 2 | . | 6 | . | 1 | 1 | . | ||||||
| Painted Lady | 5 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | ||||||
| Small Tortoiseshell | 25 | . | . | 1 | . | . | . | . | . | 1 | . | . | 2 | . | 3 | 9 | 5 | 3 | 1 | . | 3 | ||||||
| Peacock | 39 | 8 | 7 | 5 | . | . | 2 | 1 | . | . | . | . | 1 | 1 | . | 1 | . | . | . | . | . | ||||||
| Comma | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | ||||||
| Dark Green Fritillary | 7 | . | . | . | . | . | . | . | . | 1 | 1 | 3 | . | 1 | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 51 | . | . | . | 1 | 4 | . | 2 | 2 | . | . | 1 | . | 3 | 2 | 12 | 6 | 5 | 6 | 2 | 3 | ||||||
| Marbled White | 68 | . | . | . | . | . | . | . | . | 16 | 24 | 9 | 10 | 1 | . | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 51 | . | . | . | . | . | . | . | . | . | 6 | 8 | 13 | 17 | 4 | 2 | 1 | . | . | . | . | ||||||
| Meadow Brown | 617 | . | . | . | . | . | . | . | 5 | 6 | 11 | 19 | 50 | 47 | 76 | 153 | 115 | 76 | 32 | 21 | 10 | ||||||
| Small Heath | 72 | . | . | . | 3 | . | 3 | 8 | 7 | 3 | 3 | 1 | 4 | 2 | 1 | 12 | 5 | 5 | 2 | . | 1 | ||||||