
| 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 Skipper | NI | . | . | . | . | . | . | . | . | 4 | 12 | 21 | . | 1 | . | 2 | 1 | . | . | . | . | ||||||
| Large Skipper | 12 | . | . | . | . | . | . | 1 | 1 | 2 | 5 | 1 | . | 2 | . | . | . | . | . | . | . | ||||||
| Brimstone | 81 | 12 | 14 | 14 | 12 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | . | . | ||||||
| Large White | 60 | . | . | . | 2 | 5 | 3 | 2 | . | 2 | . | 3 | 4 | 7 | 3 | 13 | 4 | 3 | 4 | . | . | ||||||
| Small White | 171 | . | 6 | 7 | 17 | 19 | 1 | 2 | 3 | 1 | . | 15 | 10 | 18 | 7 | 15 | 8 | 9 | 6 | 2 | . | ||||||
| Green-veined White | 12 | . | . | . | 2 | . | 1 | . | . | . | . | 2 | . | . | . | 3 | 1 | . | 1 | . | . | ||||||
| Orange Tip | 55 | . | 13 | 4 | 9 | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 8 | 3 | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | ||||||
| Common Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| White Admiral | 30 | . | . | . | . | . | . | . | . | 1 | 17 | 3 | 7 | 1 | 1 | . | . | . | . | . | . | ||||||
| Purple Emperor | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 3 | . | 1 | . | . | . | ||||||
| Small Tortoiseshell | 9 | . | . | . | . | . | . | . | . | 1 | . | 1 | 2 | 2 | . | . | 1 | . | 2 | . | . | ||||||
| Peacock | 83 | 7 | 7 | 6 | . | . | . | . | . | . | . | . | 6 | 7 | 11 | 21 | 5 | 3 | . | . | . | ||||||
| Comma | 13 | 3 | . | . | . | . | . | . | . | . | . | 1 | 3 | 3 | . | 1 | . | . | . | . | . | ||||||
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | 115 | . | . | . | . | . | . | . | . | 14 | 23 | 26 | 23 | 19 | 4 | 5 | 1 | . | . | . | . | ||||||
| Speckled Wood | 104 | . | . | . | . | . | 1 | 1 | 10 | 10 | 13 | 5 | 1 | 7 | 3 | 9 | 10 | 8 | 14 | 7 | 4 | ||||||
| Wall Brown | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 196 | . | . | . | . | . | . | . | . | 1 | 8 | 61 | 47 | 58 | 10 | 8 | 3 | . | . | . | . | ||||||
| Meadow Brown | 395 | . | . | . | . | . | . | . | 23 | 41 | 47 | 88 | 73 | 73 | 20 | 18 | 10 | 2 | . | . | . | ||||||
| Ringlet | 50 | . | . | . | . | . | 1 | . | . | 2 | 10 | 20 | 8 | 8 | . | . | . | . | . | . | . | ||||||