
| 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 | 8 | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 2 | 2 | . | . | . | . | . | |||||||
| Large Skipper | 84 | . | . | . | . | . | . | . | 7 | 17 | 17 | 21 | 10 | 10 | 2 | . | . | . | . | . | |||||||
| Grizzled Skipper | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Wood White | 68 | . | . | . | 8 | 12 | 7 | 9 | 9 | 10 | 5 | 1 | 1 | 1 | 1 | 1 | 3 | . | . | . | |||||||
| Brimstone | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Large White | 7 | . | . | . | . | 1 | . | . | . | . | 1 | . | . | 2 | 1 | 2 | . | . | . | . | |||||||
| Small White | 21 | . | . | . | . | . | . | . | . | . | . | . | 1 | 7 | 4 | 5 | 1 | . | . | 2 | |||||||
| Green-veined White | 234 | . | 5 | 4 | 9 | 10 | 3 | 1 | . | 1 | . | 4 | 13 | 30 | 38 | 51 | 43 | 10 | 10 | 2 | |||||||
| Orange Tip | 15 | . | 7 | 5 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Purple Hairstreak | 27 | . | . | . | . | . | . | . | . | . | . | . | 1 | 14 | 8 | . | 3 | . | 1 | . | |||||||
| White-letter Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||
| Common Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||
| Holly Blue | 5 | 1 | . | 3 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||
| White Admiral | 8 | . | . | . | . | . | . | . | . | . | 3 | 4 | . | 1 | . | . | . | . | . | . | |||||||
| Red Admiral | 20 | . | . | . | . | . | . | . | 1 | . | 3 | . | . | . | . | 1 | 2 | . | 4 | 9 | |||||||
| Painted Lady | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 2 | . | . | . | |||||||
| Small Tortoiseshell | 14 | . | . | 1 | . | . | . | . | . | . | . | . | . | 3 | 2 | 1 | . | . | 5 | 2 | |||||||
| Peacock | 106 | 22 | 4 | 11 | . | . | 1 | . | . | . | . | 1 | . | 4 | 32 | 20 | 10 | . | 2 | . | |||||||
| Comma | 20 | 3 | . | . | . | . | . | . | . | . | . | 2 | 3 | 2 | 3 | . | . | . | 4 | 3 | |||||||
| Pearl-bordered Fritillary | 65 | . | . | . | 13 | 36 | 16 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Silver-washed Fritillary | 40 | . | . | . | . | . | . | . | . | . | 3 | 10 | 7 | 7 | 7 | 3 | 1 | . | 1 | 1 | |||||||
| Speckled Wood | 290 | 1 | 8 | 7 | 6 | 9 | 4 | 14 | 20 | 32 | 9 | 3 | 6 | 1 | 7 | 15 | 23 | 30 | 42 | 51 | |||||||
| Marbled White | 52 | . | . | . | . | . | . | . | . | 1 | 11 | 12 | 12 | 10 | 6 | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 467 | . | . | . | . | . | . | . | . | . | . | . | 29 | 100 | 118 | 122 | 97 | 3 | . | . | |||||||
| Meadow Brown | 50 | . | . | . | . | . | . | . | . | . | 3 | 5 | 10 | 9 | 11 | 6 | 6 | . | . | . | |||||||
| Ringlet | 513 | . | . | . | . | . | . | . | . | 10 | 145 | 149 | 145 | 60 | 33 | 3 | . | . | . | . | |||||||