
| 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 | ||||||||||||||||||||||||||
| Small Skipper | . | . | . | . | . | . | . | . | . | . | 4 | 18 | 22 | 36 | 16 | 2 | 2 | . | . | . | . | |||||
| Large Skipper | . | . | . | . | . | . | . | . | 8 | 6 | 8 | . | . | 2 | 2 | . | . | . | . | . | . | |||||
| Brimstone | . | 12 | 6 | 2 | 8 | 2 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | 2 | . | |||||
| Large White | . | 4 | . | . | 10 | 4 | 6 | 6 | 2 | 12 | 2 | 16 | 4 | 56 | 36 | 26 | 42 | 16 | 4 | 4 | 14 | |||||
| Small White | . | . | 2 | 2 | 12 | 14 | 8 | 10 | 6 | 4 | . | . | . | 10 | 8 | 2 | 2 | 8 | 6 | 8 | 4 | |||||
| Green-veined White | . | . | . | . | . | . | 6 | . | . | . | . | . | . | 4 | . | 4 | 2 | . | 10 | 4 | . | |||||
| Orange Tip | . | . | . | 2 | 4 | . | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | . | . | . | . | . | . | 4 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 2 | 2 | . | |||||
| Common Blue | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 10 | 6 | 4 | 2 | . | . | . | |||||
| Holly Blue | 2 | 4 | 16 | 18 | 22 | 26 | 6 | 2 | . | . | . | . | 2 | 6 | 8 | . | 4 | . | . | . | . | |||||
| White Admiral | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | |||||
| Red Admiral | . | 2 | . | . | 4 | . | . | . | . | 4 | . | . | . | . | . | 2 | 2 | 4 | . | 2 | 4 | |||||
| Small Tortoiseshell | 8 | 16 | 20 | . | 6 | 4 | 2 | 4 | 12 | 22 | 2 | 20 | 6 | . | . | . | . | . | . | . | . | |||||
| Peacock | 8 | 12 | 8 | 2 | 8 | 8 | 2 | . | . | . | . | . | . | 8 | 16 | 4 | . | . | . | . | . | |||||
| Comma | 4 | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 4 | 2 | . | . | . | . | 4 | 2 | |||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | 2 | . | . | . | . | |||||
| Speckled Wood | . | 2 | 4 | . | . | 2 | 4 | 8 | 8 | 4 | 2 | . | . | 4 | 8 | 8 | 12 | 20 | 4 | . | 2 | |||||
| Marbled White | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 104 | 114 | 10 | 10 | 4 | . | . | . | |||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | . | 14 | 40 | 62 | 96 | 78 | 44 | 8 | 6 | . | 2 | . | |||||