
| 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 | . | . | . | . | . | . | . | . | . | . | 3 | 2 | 3 | 1 | 4 | . | . | . | ||||||||
| Large Skipper | 16 | . | . | . | . | . | . | . | 2 | 3 | 6 | 3 | . | . | . | . | . | . | . | ||||||||
| Brimstone | 9 | 1 | 4 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Large White | 15 | . | . | . | . | 1 | . | . | . | . | . | . | 4 | . | 1 | . | . | 1 | 1 | ||||||||
| Small White | 14 | . | . | . | . | 2 | 1 | . | . | . | . | . | . | 2 | 3 | 2 | . | . | . | ||||||||
| Green-veined White | 8 | . | . | . | 2 | . | 1 | . | . | . | . | . | . | 2 | . | . | . | . | . | ||||||||
| Orange Tip | 10 | . | . | 2 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||||
| Small Blue | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Common Blue | 43 | . | . | . | . | . | . | 9 | 5 | 2 | . | . | . | . | 2 | 11 | 2 | 3 | 1 | ||||||||
| White Admiral | 3 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | ||||||||
| Red Admiral | 2 | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Tortoiseshell | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Peacock | 15 | 1 | 3 | . | 3 | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | ||||||||
| Silver-washed Fritillary | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||||
| Speckled Wood | 68 | . | . | 1 | 2 | . | . | 3 | 2 | . | 1 | 1 | 4 | 1 | 4 | 12 | 4 | 8 | 4 | ||||||||
| Gatekeeper / Hedge Brown | 289 | . | . | . | . | . | . | . | . | . | . | 2 | 61 | 59 | 30 | 16 | 3 | 2 | . | ||||||||
| Meadow Brown | 407 | . | . | . | . | . | . | . | 8 | 10 | 49 | 86 | 46 | 39 | 31 | 10 | . | . | . | ||||||||
| Ringlet | 19 | . | . | . | . | . | . | . | 1 | 1 | 6 | 1 | 2 | 3 | 1 | . | . | . | . | ||||||||