
| 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 | . | . | . | . | . | . | . | . | . | 4 | 7 | 14 | 9 | 31 | 4 | . | . | . | . | . | ||||||
| Silver-spotted Skipper | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | 1 | . | . | ||||||
| Large Skipper | 10 | . | . | . | . | . | . | . | 2 | 1 | 4 | 2 | . | . | 1 | 1 | . | . | . | . | . | ||||||
| Grizzled Skipper | 4 | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 12 | 1 | 1 | 2 | . | 1 | . | . | 1 | . | . | . | 1 | . | 4 | . | . | . | . | . | 1 | ||||||
| Large White | 4 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 3 | . | . | . | . | . | . | ||||||
| Small White | 17 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 11 | . | 1 | . | 4 | . | . | ||||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||
| Brown Argus | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | ||||||
| Common Blue | 54 | . | . | . | . | . | 2 | 5 | 1 | . | 1 | . | . | 2 | 13 | 5 | 11 | 5 | 8 | . | . | ||||||
| Chalk-hill Blue | 31 | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | 27 | 1 | . | . | . | . | . | ||||||
| Red Admiral | 3 | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | 1 | . | . | . | . | . | . | ||||||
| Small Tortoiseshell | 8 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 3 | 1 | 1 | . | ||||||
| Peacock | 17 | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 15 | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | ||||||
| Speckled Wood | 4 | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | 1 | . | . | . | ||||||
| Marbled White | 25 | . | . | . | . | . | . | . | . | . | 7 | 10 | 6 | . | 2 | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 131 | . | . | . | . | . | . | . | . | . | . | 6 | 18 | 17 | 76 | 12 | 2 | . | . | . | . | ||||||
| Meadow Brown | 294 | . | . | . | . | . | . | . | . | 9 | 27 | 35 | 38 | 36 | 68 | 28 | 14 | 21 | 14 | . | . | ||||||
| Small Heath | 60 | . | . | . | . | . | 1 | . | 1 | 4 | 5 | 6 | . | . | . | . | 6 | 10 | 11 | 1 | 3 | ||||||
| Ringlet | 27 | . | . | . | . | . | . | . | . | 12 | . | 11 | 2 | . | 1 | . | . | . | . | . | . | ||||||