
| 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 | 86 | . | . | . | . | . | . | . | . | . | . | . | 8 | 30 | 24 | 4 | 3 | 2 | . | . | . | ||||||
| Silver-spotted Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 10 | . | 15 | 7 | . | 4 | ||||||
| Large Skipper | 9 | . | . | . | . | . | . | . | . | . | . | 3 | . | 5 | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | 13 | . | . | . | . | . | 6 | 2 | . | 3 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | ||||||
| Brimstone | 24 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | . | . | 1 | 1 | 6 | . | . | . | . | . | ||||||
| Large White | 11 | . | . | . | . | 2 | . | . | . | . | 1 | . | . | 5 | 2 | . | . | . | . | . | . | ||||||
| Small White | 4 | . | . | . | . | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green-veined White | NI | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 3 | 10 | . | 4 | 3 | . | 3 | ||||||
| Orange Tip | 3 | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 4 | . | . | . | . | . | 1 | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | 6 | ||||||
| Brown Argus | 12 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 5 | 2 | . | 1 | . | . | ||||||
| Common Blue | 114 | . | . | . | . | 4 | . | . | . | 7 | 2 | 20 | . | . | . | 22 | 9 | 9 | 7 | . | . | ||||||
| Chalk-hill Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 5 | 2 | 2 | 1 | . | . | ||||||
| Holly Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Red Admiral | 4 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | . | . | ||||||
| Painted Lady | 13 | . | . | . | . | . | . | . | . | . | . | 6 | . | . | 1 | 2 | 3 | . | . | . | . | ||||||
| Comma | 8 | . | . | 1 | 1 | . | . | 1 | . | . | . | . | . | 3 | . | 1 | . | . | . | . | . | ||||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | 5 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 2 | . | . | . | . | . | ||||||
| Speckled Wood | 2 | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Marbled White | 69 | . | . | . | . | . | . | . | . | . | . | . | 6 | 18 | 22 | 4 | 9 | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 139 | . | . | . | . | . | . | . | . | . | . | . | . | . | 19 | 43 | 13 | 16 | 2 | . | . | ||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | . | . | . | 39 | 56 | 29 | 48 | 31 | 33 | 67 | 30 | 21 | ||||||
| Small Heath | NI | . | . | . | . | . | . | . | . | . | . | 5 | 10 | 16 | . | 2 | . | . | 3 | 19 | 4 | ||||||
| Ringlet | 60 | . | . | . | . | . | . | . | . | . | . | . | 10 | 28 | 5 | . | 4 | . | . | . | . | ||||||