
| 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 | . | . | . | . | . | . | . | . | 18 | 17 | 24 | 16 | 5 | 7 | 2 | . | . | . | . | |||||||
| Large Skipper | . | . | . | . | . | . | 18 | 24 | 27 | 32 | 19 | 11 | 6 | 1 | 2 | . | . | . | . | |||||||
| Dingy Skipper | . | . | 43 | 40 | 16 | 9 | 3 | 1 | . | . | . | 1 | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Large White | . | . | 2 | 3 | 1 | 1 | 2 | . | 3 | 2 | 7 | 5 | 15 | 24 | 26 | 9 | 19 | 11 | 10 | |||||||
| Small White | 2 | 10 | 7 | 4 | 2 | 2 | 1 | 1 | 4 | 3 | 14 | 16 | 19 | 8 | 12 | 48 | 37 | 20 | 6 | |||||||
| Green-veined White | . | . | . | 2 | 5 | 2 | 2 | . | . | . | 4 | 11 | 1 | 2 | . | 6 | . | . | . | |||||||
| Orange Tip | 1 | 4 | 4 | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 1 | 1 | 5 | 2 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | 1 | 1 | |||||||
| Brown Argus | . | . | 3 | 10 | 8 | 1 | . | 1 | 1 | . | . | 3 | 7 | 14 | 14 | 8 | 7 | . | . | |||||||
| Common Blue | . | . | 1 | 33 | 41 | 14 | 8 | 8 | 2 | . | 1 | 13 | 46 | 83 | 96 | 83 | 36 | 2 | . | |||||||
| Adonis Blue | . | . | . | 20 | 34 | 19 | 1 | 1 | . | . | . | . | . | 11 | 45 | 16 | 7 | . | . | |||||||
| Holly Blue | . | . | 2 | 2 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | 2 | . | |||||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||
| Small Tortoiseshell | 4 | 8 | 2 | 1 | . | . | 2 | 4 | 3 | . | 4 | . | 1 | 7 | 10 | 6 | 7 | 2 | . | |||||||
| Peacock | 14 | 6 | 6 | . | . | 2 | . | . | . | . | . | 2 | 16 | 5 | . | . | . | 1 | . | |||||||
| Comma | 1 | . | . | . | . | 1 | . | . | 1 | 1 | . | 2 | . | . | . | 3 | 3 | 1 | 2 | |||||||
| Speckled Wood | 1 | 10 | 6 | 4 | 8 | 6 | 2 | 5 | . | 4 | 6 | 9 | 7 | 18 | 20 | 12 | 2 | 10 | 7 | |||||||
| Wall Brown | . | . | 11 | 20 | . | . | . | . | . | . | . | 4 | 10 | 10 | 7 | . | . | . | 1 | |||||||
| Marbled White | . | . | . | . | . | . | . | 2 | 89 | 131 | 82 | 22 | . | 3 | 1 | . | . | . | . | |||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | 6 | 24 | 48 | 52 | 25 | 14 | 5 | . | . | . | . | |||||||
| Meadow Brown | . | . | . | . | . | . | 10 | 11 | 53 | 53 | 101 | 54 | 46 | 53 | 36 | 1 | 1 | . | . | |||||||
| Small Heath | . | . | 24 | 20 | 18 | 16 | 30 | 41 | 20 | 17 | 21 | 13 | 10 | 46 | 91 | 21 | 8 | 5 | 2 | |||||||
| Ringlet | . | . | . | . | . | . | . | . | 21 | 28 | 5 | 1 | 1 | . | . | . | . | . | . | |||||||