
| 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 | 34 | . | . | . | . | . | . | . | . | . | 2 | 1 | 16 | . | 8 | . | . | . | . | . | . | ||||||
| Large Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 7 | . | . | . | . | 3 | . | ||||||
| Brimstone | 121 | . | 2 | . | 11 | 18 | 25 | 20 | 11 | 6 | . | 9 | 7 | . | 3 | . | . | . | 2 | . | . | ||||||
| Large White | 13 | . | . | . | . | 4 | 3 | . | 1 | . | . | . | . | 2 | 3 | . | . | . | . | . | . | ||||||
| Small White | NI | . | . | . | . | 6 | 3 | 5 | . | . | . | . | 1 | . | 4 | . | 3 | 1 | . | . | . | ||||||
| Green-veined White | 17 | . | . | . | . | 1 | 1 | 4 | 3 | 1 | . | 1 | . | . | 5 | . | . | 3 | . | . | . | ||||||
| Orange Tip | 23 | . | . | . | 9 | 6 | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Common Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Holly Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||
| White Admiral | 9 | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 3 | . | . | . | . | . | . | ||||||
| Red Admiral | 8 | 1 | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | 3 | . | . | ||||||
| Small Tortoiseshell | 4 | . | . | 2 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | ||||||
| Peacock | 47 | . | 9 | 8 | 8 | 7 | 3 | 5 | 1 | 2 | . | . | 2 | . | . | . | . | . | . | . | . | ||||||
| Comma | 21 | 5 | 3 | . | 3 | . | . | . | 1 | . | . | . | . | . | 3 | . | . | . | 2 | 1 | . | ||||||
| Small Pearl-bordered Fritillary | 10 | . | . | . | . | . | . | . | . | 7 | . | . | 3 | . | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | 16 | . | . | . | . | . | 2 | 2 | 6 | 9 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Dark Green Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 14 | . | . | . | 2 | . | . | ||||||
| Silver-washed Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | 5 | . | 4 | . | . | . | . | . | . | ||||||
| Speckled Wood | 156 | . | . | . | . | 5 | 1 | 3 | 2 | 4 | 20 | 36 | 16 | . | 5 | . | 10 | 8 | 11 | . | . | ||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 22 | . | . | . | . | . | . | ||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | . | . | . | 8 | 34 | 13 | . | . | . | . | . | . | ||||||
| Ringlet | NI | . | . | . | . | . | . | . | . | . | . | 14 | 113 | 169 | 66 | . | . | . | . | . | . | ||||||