
| 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 | 56 | . | . | . | . | . | . | . | . | . | . | . | 14 | 10 | 16 | . | . | . | . | . | |||||||
| Small Skipper | 56 | . | . | . | . | . | . | . | . | . | . | . | 14 | 10 | 16 | . | . | . | . | . | |||||||
| Large Skipper | 27 | . | . | . | . | . | . | . | 7 | 3 | 7 | 5 | 1 | . | . | . | . | . | . | . | |||||||
| Brimstone | 56 | . | 4 | 7 | 3 | 5 | 2 | 5 | 2 | 3 | . | . | 1 | 2 | 17 | 1 | . | . | 1 | . | |||||||
| Large White | 29 | . | . | 1 | 2 | 3 | 6 | 1 | 1 | 1 | . | 1 | 5 | 1 | 3 | . | . | . | . | . | |||||||
| Small White | 7 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | . | . | . | . | . | |||||||
| Green-veined White | 71 | . | . | . | 1 | 6 | 3 | 2 | . | 1 | . | . | 3 | 6 | 23 | 1 | . | 2 | 1 | . | |||||||
| Orange Tip | 21 | . | 1 | 8 | 10 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||
| Brown Argus | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||
| Common Blue | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | |||||||
| Red Admiral | 11 | . | . | . | . | 1 | 1 | . | 1 | 1 | . | . | . | 1 | 2 | . | 1 | 1 | 1 | . | |||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | |||||||
| Small Tortoiseshell | 10 | . | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | 3 | 2 | 1 | 1 | . | |||||||
| Peacock | 238 | 2 | 13 | 14 | 9 | 4 | 3 | 3 | . | . | . | . | . | 72 | 49 | 1 | . | . | . | . | |||||||
| Comma | 13 | 3 | 1 | 2 | . | . | . | 1 | . | . | . | 1 | . | . | . | . | . | . | . | 1 | |||||||
| Silver-washed Fritillary | 118 | . | . | . | . | . | . | . | . | . | 2 | 9 | 29 | 16 | 13 | . | . | . | . | . | |||||||
| Speckled Wood | 287 | . | 6 | 13 | 16 | 6 | 12 | 12 | 20 | 17 | 12 | 8 | 3 | 17 | 20 | 28 | 25 | 10 | 14 | 1 | |||||||
| Marbled White | 86 | . | . | . | . | . | . | . | . | . | . | 14 | 27 | 2 | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 184 | . | . | . | . | . | . | . | . | . | . | . | 23 | 34 | 51 | 2 | 1 | . | . | . | |||||||
| Meadow Brown | 384 | . | . | . | . | . | . | . | 5 | 27 | 110 | 124 | 6 | 9 | 4 | . | . | . | . | . | |||||||
| Ringlet | 168 | . | . | . | . | . | . | . | . | . | 24 | 41 | 26 | 2 | . | . | . | . | . | . | |||||||