
| 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 | 29 | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 5 | 10 | 3 | 4 | 1 | . | . | . | . | . | . | |||
| Large Skipper | NI | . | . | . | . | . | . | . | . | . | 11 | 16 | 9 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | |||
| Dingy Skipper | NI | . | . | . | . | . | 2 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Grizzled Skipper | NI | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Brimstone | NI | 1 | 1 | 4 | 9 | 5 | 4 | 1 | 1 | 1 | 1 | . | . | 1 | . | . | 1 | 1 | . | . | 2 | . | . | . | |||
| Large White | 3 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||
| Small White | 9 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 2 | 2 | . | 2 | 4 | 3 | 2 | 1 | . | . | |||
| Green-veined White | 18 | . | . | . | 4 | . | 1 | 1 | . | . | . | . | . | . | . | 5 | 2 | . | 1 | . | . | . | . | . | |||
| Orange Tip | NI | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Small Copper | 9 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | 1 | . | 1 | . | . | . | |||
| Brown Argus | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | . | . | . | . | . | |||
| Common Blue | NI | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | |||
| White Admiral | NI | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | |||
| Purple Emperor | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||
| Red Admiral | 3 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||
| Painted Lady | NI | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||
| Small Tortoiseshell | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Peacock | NI | 3 | 1 | 1 | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Comma | 2 | 7 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | 1 | |||
| Small Pearl-bordered Fritillary | 548 | . | . | . | . | . | . | 36 | 55 | 44 | 35 | 5 | 4 | . | . | . | . | . | . | . | . | . | . | . | |||
| Pearl-bordered Fritillary | 103 | . | . | . | . | . | 27 | 10 | 14 | 3 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Dark Green Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||
| Silver-washed Fritillary | 22 | . | . | . | . | . | . | . | . | . | . | 2 | . | 3 | 10 | 3 | 3 | 7 | 1 | . | . | . | . | . | |||
| Marsh Fritillary | NI | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Speckled Wood | 4 | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | 1 | 2 | 5 | 2 | . | 1 | . | . | |||
| Marbled White | 50 | . | . | . | . | . | . | . | . | . | . | . | 7 | 17 | 18 | 5 | 1 | 1 | . | . | . | . | . | . | |||
| Gatekeeper / Hedge Brown | 80 | . | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 8 | 20 | 36 | 2 | 2 | . | . | . | . | |||
| Meadow Brown | 28 | . | . | . | . | . | . | . | . | . | . | 1 | 4 | 6 | 7 | 3 | 3 | 1 | . | . | . | . | . | . | |||
| Small Heath | NI | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Ringlet | 84 | . | . | . | . | . | . | . | . | . | . | 15 | 11 | 26 | 36 | 13 | . | 1 | . | . | . | . | . | . | |||
| Silver Y | NI | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| The Cinnabar | NI | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Mother Shipton | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||