
| 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 | 4 | . | . | . | . | . | 1 | 2 | . | 2 | 1 | . | . | . | . | . | . | . | |||||||||
| Large Skipper | 4 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||||||
| Brimstone | 25 | 1 | 6 | 1 | . | 1 | . | . | . | . | . | 2 | . | . | . | 3 | 2 | . | |||||||||
| Large White | 115 | . | . | . | 2 | . | . | 2 | 6 | 12 | 12 | 5 | 2 | 36 | 1 | . | 7 | . | |||||||||
| Small White | 13 | . | . | . | . | . | . | 1 | . | . | . | . | 19 | . | . | . | . | 2 | |||||||||
| Green-veined White | 68 | . | . | 1 | 5 | 2 | 1 | . | . | 1 | 5 | 11 | 3 | 7 | 8 | 10 | 4 | . | |||||||||
| Orange Tip | 37 | 5 | 3 | 3 | 2 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Purple Hairstreak | 19 | . | . | . | . | . | . | . | . | 8 | 2 | . | . | 3 | 2 | . | . | . | |||||||||
| Holly Blue | 2 | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| White Admiral | 4 | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 29 | . | . | . | . | . | . | 4 | . | 3 | 3 | 1 | 1 | . | . | 1 | 3 | 5 | |||||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||
| Small Tortoiseshell | 5 | . | . | . | . | . | . | 1 | . | 1 | . | 1 | . | . | 1 | . | 1 | . | |||||||||
| Peacock | 50 | . | 7 | 10 | . | . | . | 1 | . | . | . | 7 | 12 | . | 1 | . | . | . | |||||||||
| Comma | 16 | . | . | . | . | . | . | 1 | 3 | 5 | 2 | . | . | . | . | . | 1 | 4 | |||||||||
| Silver-washed Fritillary | 27 | . | . | . | . | . | . | . | 3 | 1 | 10 | 5 | 6 | 1 | 1 | . | . | . | |||||||||
| Speckled Wood | 221 | 2 | 1 | 2 | 12 | 9 | 8 | 5 | 1 | . | 6 | 17 | 9 | 14 | 25 | 15 | 20 | 6 | |||||||||
| Marbled White | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 115 | . | . | . | . | . | . | . | . | 12 | 26 | 20 | 15 | 34 | . | . | . | . | |||||||||
| Meadow Brown | 198 | . | . | . | . | . | . | 39 | 28 | 32 | 23 | 14 | 20 | 21 | . | 1 | . | . | |||||||||
| Ringlet | 42 | . | . | . | . | . | . | 2 | 14 | 12 | 11 | . | 1 | 1 | . | . | . | . | |||||||||