
| 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 | 29 | 15 | 11 | 4 | 7 | 2 | 1 | . | . | ||||||||
| Large Skipper | NI | . | . | . | . | . | 1 | 9 | 5 | 39 | 16 | 15 | 16 | . | 3 | . | . | . | . | ||||||||
| Brimstone | 110 | 8 | 3 | 3 | 2 | . | . | . | . | . | . | . | 5 | 4 | 32 | 20 | 18 | . | . | ||||||||
| Large White | NI | . | . | . | . | . | . | . | . | 2 | 1 | 1 | 3 | . | . | 2 | . | . | . | ||||||||
| Small White | NI | . | . | 1 | . | 1 | . | . | . | 1 | . | 4 | 19 | 12 | 12 | 4 | 12 | 3 | . | ||||||||
| Green-veined White | NI | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | 1 | 4 | . | . | ||||||||
| Orange Tip | NI | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Common Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | ||||||||
| White Admiral | NI | . | . | . | . | . | . | . | . | 2 | . | 2 | . | . | . | . | . | . | . | ||||||||
| Red Admiral | 14 | . | 1 | . | . | . | . | . | . | 1 | 1 | 2 | 1 | . | . | 1 | 3 | 2 | 2 | ||||||||
| Painted Lady | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | ||||||||
| Small Tortoiseshell | 11 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 4 | 2 | . | ||||||||
| Peacock | NI | 2 | 5 | . | 1 | . | . | . | . | . | . | . | 4 | 19 | 30 | 14 | 3 | . | . | ||||||||
| Comma | 10 | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | 4 | . | 1 | . | . | ||||||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | 1 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Pearl-bordered Fritillary | NI | . | . | . | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Silver-washed Fritillary | NI | . | . | . | . | . | . | . | . | 11 | 3 | 10 | 19 | 26 | 15 | 10 | 3 | . | . | ||||||||
| Speckled Wood | NI | . | 4 | 8 | 3 | 5 | 1 | 10 | 6 | 2 | . | . | . | 7 | 12 | 22 | 73 | 27 | 5 | ||||||||
| Marbled White | NI | . | . | . | . | . | . | . | . | 1 | 10 | 7 | 6 | . | . | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | 1 | . | 11 | 16 | 55 | 70 | 72 | 30 | 3 | . | . | ||||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | 8 | 8 | 13 | 4 | 8 | 4 | 10 | . | . | . | ||||||||
| Ringlet | NI | . | . | . | . | . | . | . | . | 50 | 126 | 113 | 119 | 19 | 1 | . | . | . | . | ||||||||