
| 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 | 13 | . | . | . | . | . | . | . | . | . | . | . | 3 | 7 | 1 | 2 | . | . | . | . | . | . | |||||
| Large Skipper | 41 | . | . | . | . | . | . | . | . | 3 | 3 | 9 | 10 | 9 | 5 | 2 | . | . | . | . | . | . | |||||
| Clouded Yellow | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||
| Brimstone | 6 | 2 | 1 | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Large White | 15 | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | 3 | 5 | 1 | 3 | 1 | . | . | . | |||||
| Small White | 27 | . | . | . | 4 | . | 1 | . | . | . | . | . | . | 1 | 3 | 8 | 5 | 3 | . | . | . | . | |||||
| Green-veined White | 25 | . | . | 2 | . | 2 | 6 | 1 | 1 | . | . | . | . | . | 1 | 9 | 3 | . | . | . | . | . | |||||
| Orange Tip | 9 | . | . | 2 | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||
| Small Copper | 4 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 2 | . | 1 | . | . | . | |||||
| Common Blue | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 3 | . | . | . | . | |||||
| Holly Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| White Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Red Admiral | 27 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 4 | 9 | 8 | 1 | 3 | 1 | . | . | |||||
| Painted Lady | 155 | . | . | . | . | . | 1 | . | . | 1 | 2 | . | . | 3 | 34 | 69 | 31 | 12 | 2 | . | . | . | |||||
| Small Tortoiseshell | 36 | . | . | . | . | . | 1 | . | . | . | . | . | 2 | 11 | 11 | 5 | 1 | 2 | . | . | 1 | 1 | |||||
| Peacock | 107 | . | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | 17 | 49 | 24 | 11 | 1 | . | . | 1 | |||||
| Comma | 5 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | 3 | |||||
| High Brown Fritillary | 61 | . | . | . | . | . | . | . | 1 | 5 | 5 | 13 | 13 | 12 | 6 | 6 | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 22 | . | . | . | . | . | . | . | . | . | . | . | 7 | 7 | 1 | 4 | 1 | 2 | . | . | . | . | |||||
| Speckled Wood | 30 | . | . | . | . | . | . | . | 2 | 1 | 3 | 2 | 7 | 3 | . | 1 | 2 | . | . | 3 | 2 | 3 | |||||
| Marbled White | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||
| Grayling | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 621 | . | . | . | . | . | . | . | . | . | . | . | . | 31 | 244 | 164 | 93 | 72 | 9 | 7 | 1 | . | |||||
| Meadow Brown | 107 | . | . | . | . | . | . | . | . | 3 | 8 | 12 | 17 | 25 | 25 | 11 | 5 | 1 | . | . | . | . | |||||
| Small Heath | 18 | . | . | . | . | . | . | 1 | 1 | 4 | 2 | . | 1 | 1 | . | . | . | 4 | 2 | 1 | 1 | . | |||||
| Ringlet | 110 | . | . | . | . | . | . | . | . | . | 3 | 10 | 17 | 47 | 9 | 25 | . | . | . | . | . | . | |||||