
| 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 | . | . | . | . | . | . | . | . | . | 7 | 33 | 48 | 42 | 23 | 6 | 1 | . | . | . | . | . | |||||
| Large Skipper | . | . | . | . | . | 1 | 1 | 15 | 14 | 3 | 6 | 3 | 1 | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Wood White | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | |||||
| Brimstone | . | 9 | 4 | 1 | 3 | 1 | . | . | . | . | . | . | 3 | 7 | 5 | . | 4 | . | . | 5 | . | |||||
| Large White | . | 1 | 2 | 4 | 3 | 7 | 1 | 3 | 1 | 1 | 2 | 14 | 19 | 54 | 21 | 8 | 6 | 1 | 5 | 1 | . | |||||
| Small White | . | . | 1 | 2 | . | . | 1 | . | . | 1 | 2 | 1 | 5 | 26 | 9 | 2 | 12 | 23 | 1 | 2 | . | |||||
| Green-veined White | . | 1 | 3 | 9 | 7 | 10 | . | 1 | . | . | 1 | 4 | 2 | 5 | 5 | 2 | 4 | 1 | 1 | . | 1 | |||||
| Orange Tip | . | 1 | . | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 6 | 2 | . | 3 | 11 | 6 | 4 | |||||
| Common Blue | . | . | . | . | 1 | 5 | 17 | 15 | 11 | 2 | . | . | 9 | 56 | 62 | 35 | 36 | 1 | . | . | . | |||||
| Red Admiral | . | . | . | . | . | . | . | 1 | 1 | . | . | 1 | . | . | . | 4 | 1 | 5 | 5 | 14 | 1 | |||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | |||||
| Small Tortoiseshell | . | . | . | . | 1 | . | . | . | . | . | 2 | 3 | . | . | 2 | 14 | 6 | 49 | 1 | 7 | 12 | |||||
| Peacock | 8 | 6 | 1 | 2 | . | 1 | . | . | . | . | . | . | 22 | 30 | 4 | . | 7 | . | 1 | 4 | 2 | |||||
| Comma | . | 1 | . | . | . | . | . | . | . | . | . | 5 | 1 | 1 | 1 | . | 2 | 4 | 2 | 10 | 6 | |||||
| Pearl-bordered Fritillary | . | . | . | . | 11 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | . | . | . | 3 | . | 1 | 12 | 2 | . | 2 | 2 | 1 | . | . | 9 | 7 | 12 | 183 | 10 | 9 | 10 | |||||
| Wall Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | |||||
| Marbled White | . | . | . | . | . | . | . | . | . | 8 | 11 | 9 | 4 | 1 | . | . | . | . | . | . | . | |||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | . | 12 | 47 | 31 | 19 | . | . | . | . | . | |||||
| Meadow Brown | . | . | . | . | . | . | . | . | 10 | 51 | 55 | 106 | 29 | 29 | 17 | 7 | . | . | . | . | . | |||||
| Small Heath | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Ringlet | . | . | . | . | . | . | . | . | . | 36 | 61 | 148 | 68 | 23 | 5 | . | . | . | . | 1 | . | |||||