
| 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 | 2 | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Large Skipper | 5 | . | . | . | . | . | . | . | . | 2 | 3 | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 13 | 1 | . | 10 | . | 1 | . | . | . | . | . | . | 2 | 2 | 1 | . | . | . | . | . | |||||||
| Large White | 87 | . | . | . | 4 | 15 | 9 | 1 | . | . | 1 | 13 | 7 | 6 | 5 | 5 | 5 | 3 | . | . | |||||||
| Small White | 54 | . | . | . | 2 | 16 | . | 3 | . | 1 | 1 | 8 | 3 | 1 | 6 | 6 | 2 | 2 | . | . | |||||||
| Green-veined White | 57 | 2 | . | . | 5 | 3 | 2 | . | . | . | 1 | . | 10 | . | . | . | 4 | . | . | . | |||||||
| Orange Tip | 30 | 7 | 3 | . | 2 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Purple Hairstreak | 10 | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | 7 | . | |||||||
| Small Copper | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | |||||||
| Common Blue | 3 | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | . | . | . | . | . | . | |||||||
| Holly Blue | 27 | 2 | 1 | 1 | 3 | 5 | 3 | . | . | . | . | 2 | 2 | . | . | 1 | . | . | . | . | |||||||
| White Admiral | 5 | . | . | . | . | . | . | . | . | 1 | . | 1 | 3 | . | . | . | . | . | . | . | |||||||
| Red Admiral | 10 | 1 | . | . | . | . | . | . | . | 4 | . | 1 | 2 | . | . | . | . | . | . | 1 | |||||||
| Small Tortoiseshell | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | |||||||
| Peacock | 29 | 8 | 1 | . | . | 1 | . | . | . | . | . | . | 6 | 3 | 2 | . | . | . | . | . | |||||||
| Comma | 30 | 6 | 1 | 3 | . | . | . | . | . | 3 | 1 | 3 | 2 | 1 | . | . | . | . | 2 | 5 | |||||||
| Silver-washed Fritillary | 40 | . | . | . | . | . | . | . | . | 1 | 5 | 19 | 11 | . | . | 4 | . | . | . | . | |||||||
| Speckled Wood | 345 | 12 | 5 | 10 | 12 | 18 | 15 | 18 | 5 | 5 | 9 | 2 | 10 | 11 | 14 | 15 | 21 | 47 | 29 | 16 | |||||||
| Marbled White | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 145 | . | . | . | . | . | . | . | . | 6 | 4 | 26 | 65 | 22 | 11 | 5 | 4 | 2 | . | . | |||||||
| Meadow Brown | 353 | . | . | . | . | . | . | 5 | 6 | 57 | 127 | 65 | 45 | 38 | 12 | 2 | 1 | . | . | . | |||||||
| Ringlet | 92 | . | . | . | . | . | . | . | . | 20 | 9 | 29 | 31 | . | . | 2 | . | . | . | . | |||||||