
| 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 | 16 | . | . | . | . | . | . | . | . | . | . | . | . | 9 | 3 | . | 3 | 1 | . | . | |||||||
| Large Skipper | 13 | . | . | . | . | . | . | . | . | . | 7 | 5 | 1 | . | . | . | . | . | . | . | |||||||
| Wood White | 15 | . | . | . | . | . | 2 | 1 | . | 5 | 3 | 3 | . | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | |||||||
| Brimstone | 20 | 9 | 3 | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||
| Large White | 29 | . | . | . | . | . | 1 | . | . | . | . | 1 | 1 | 3 | 1 | 8 | 7 | . | 1 | . | |||||||
| Small White | 28 | . | . | 5 | . | . | 2 | . | 7 | 1 | . | . | . | 1 | 1 | 7 | . | . | . | 2 | |||||||
| Green-veined White | 46 | . | . | . | 12 | 4 | 4 | 2 | . | . | . | . | . | 4 | 5 | 1 | . | 1 | . | . | |||||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||
| Common Blue | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | 2 | |||||||
| Holly Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||
| Red Admiral | 12 | . | . | . | . | 2 | . | . | . | . | . | . | . | . | 1 | 3 | 1 | 2 | . | 1 | |||||||
| Painted Lady | 8 | . | . | . | . | 1 | . | 1 | 1 | . | . | . | . | . | . | 2 | . | 2 | 1 | . | |||||||
| Small Tortoiseshell | 11 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | 6 | 3 | . | |||||||
| Peacock | 102 | 16 | 6 | 4 | 8 | . | . | . | . | . | . | . | . | 3 | 2 | 19 | 12 | 4 | . | . | |||||||
| Silver-washed Fritillary | 38 | . | . | . | . | . | . | . | . | . | . | 1 | . | 9 | 8 | 6 | 6 | 5 | 1 | . | |||||||
| Speckled Wood | 25 | 3 | 4 | 4 | 4 | 7 | 10 | 8 | 5 | 6 | . | 1 | . | 1 | 9 | 43 | 20 | 32 | 28 | 18 | |||||||
| Marbled White | 1 | . | . | . | . | . | . | . | . | . | . | 3 | 4 | 1 | 3 | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 25 | . | . | . | . | . | . | . | . | . | . | 1 | 5 | 50 | 40 | 65 | 24 | 13 | . | . | |||||||
| Meadow Brown | 33 | . | . | . | . | . | . | . | 4 | 2 | 4 | 20 | 44 | 50 | 44 | 31 | 67 | 21 | 7 | 2 | |||||||
| Small Heath | 2 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | |||||||
| Ringlet | 13 | . | . | . | . | . | . | . | . | 19 | 19 | 38 | 34 | 17 | 13 | . | . | . | . | . | |||||||