
| 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 | 9 | . | . | . | . | . | . | . | 1 | 2 | . | 1 | 2 | . | 1 | . | . | . | . | . | . | ||||||
| Large Skipper | 13 | . | . | . | . | . | . | . | . | . | . | 6 | 2 | 2 | 1 | 1 | . | . | . | . | . | ||||||
| Brimstone | 15 | . | 3 | . | 3 | 1 | 1 | . | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||
| Large White | 12 | . | . | . | . | . | . | . | . | 1 | . | . | 6 | 3 | 5 | . | . | . | . | . | . | ||||||
| Small White | 37 | . | . | . | . | 6 | 6 | . | 2 | . | . | . | . | . | 5 | 2 | . | 1 | 5 | 1 | . | ||||||
| Green-veined White | 82 | . | . | 4 | 1 | 2 | 1 | 2 | 3 | 6 | 1 | 1 | 2 | 8 | 3 | 19 | 21 | 2 | . | . | . | ||||||
| Orange Tip | 19 | . | 5 | . | 6 | 3 | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | ||||||
| Holly Blue | 92 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | ||||||
| White Admiral | 9 | . | . | . | . | . | . | . | . | . | . | 1 | 8 | 2 | 2 | . | . | . | . | . | . | ||||||
| Red Admiral | 99 | 2 | 1 | 4 | . | 1 | . | 2 | 4 | 12 | 7 | 1 | 3 | 3 | 5 | 29 | 12 | 7 | . | . | . | ||||||
| Painted Lady | 12 | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | 1 | 6 | . | . | . | . | . | ||||||
| Small Tortoiseshell | 7 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Peacock | 18 | . | 2 | . | 1 | . | 1 | . | . | . | . | . | . | . | 2 | 5 | 3 | . | . | . | . | ||||||
| Comma | 8 | 2 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | 51 | . | . | . | . | . | . | . | . | . | . | . | 16 | 7 | 11 | 4 | 7 | 3 | . | . | . | ||||||
| Speckled Wood | 215 | . | . | 3 | 4 | 8 | 3 | 3 | 11 | 14 | 11 | 14 | 14 | 3 | 19 | 8 | 13 | 9 | 17 | 27 | 9 | ||||||
| Gatekeeper / Hedge Brown | 99 | . | . | . | . | . | . | . | . | . | . | . | 15 | 35 | 22 | 22 | 15 | . | . | . | . | ||||||
| Meadow Brown | 171 | . | . | . | . | . | . | . | . | . | 5 | 25 | 51 | 26 | 25 | 15 | 2 | . | . | . | . | ||||||
| Ringlet | 41 | . | . | . | . | . | . | . | . | . | 1 | 4 | 19 | 24 | 8 | 2 | . | . | . | . | . | ||||||