
| 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 | 6 | . | . | . | . | . | . | . | . | . | . | 2 | . | 3 | . | . | . | . | . | . | . | . | . | ||||
| Large Skipper | 8 | . | . | . | . | . | . | . | . | . | 4 | . | 1 | . | . | 3 | . | . | . | . | . | . | . | ||||
| Brimstone | 79 | 4 | 1 | 9 | 8 | 10 | 8 | 4 | . | . | . | . | . | . | 7 | 2 | 1 | . | 2 | 1 | . | 1 | . | ||||
| Large White | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | ||||
| Small White | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | 2 | . | . | ||||
| Green-veined White | 28 | . | . | . | . | . | 4 | 3 | . | . | . | . | . | . | 3 | 2 | 5 | 2 | 5 | . | . | . | . | ||||
| Orange Tip | 28 | . | . | 2 | 6 | 11 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | 15 | . | . | . | . | . | 2 | 1 | . | 2 | 4 | . | 5 | . | . | . | . | . | . | . | . | . | . | ||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | ||||
| Small Copper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | ||||
| Common Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | ||||
| Holly Blue | 5 | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | ||||
| White Admiral | 12 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 6 | . | . | . | . | . | . | . | . | ||||
| Red Admiral | 7 | 1 | . | . | . | . | . | . | . | . | 1 | . | 2 | 1 | . | . | . | . | . | 1 | 1 | . | . | ||||
| Peacock | 5 | . | . | . | 1 | . | 2 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||
| Comma | 14 | 4 | 3 | . | . | . | . | . | . | . | 1 | . | 2 | . | 2 | . | . | . | . | . | . | . | . | ||||
| Small Pearl-bordered Fritillary | 15 | . | . | . | . | . | . | 7 | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Pearl-bordered Fritillary | 20 | . | . | . | . | 7 | 5 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Dark Green Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||
| Silver-washed Fritillary | 61 | . | . | . | . | . | . | . | . | . | . | . | 3 | 6 | 19 | 10 | 5 | 2 | 1 | 2 | . | . | . | ||||
| Speckled Wood | 56 | . | . | . | . | 1 | 1 | . | 2 | 2 | 2 | . | 3 | . | 1 | 3 | 2 | 6 | 9 | 9 | 6 | 4 | 2 | ||||
| Wall Brown | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 80 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 26 | 10 | 9 | 7 | 8 | 1 | . | . | . | ||||
| Meadow Brown | 63 | . | . | . | . | . | . | . | . | . | . | 2 | 7 | 10 | 10 | 8 | 8 | 1 | 6 | . | 1 | 1 | . | ||||
| Small Heath | 2 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Ringlet | 47 | . | . | . | . | . | . | . | . | . | . | 3 | 10 | 11 | 9 | 4 | 1 | . | . | . | . | . | . | ||||