
| 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 | . | . | . | . | . | . | . | . | . | . | . | 19 | . | 29 | 46 | 6 | 14 | 11 | . | . | . | |||||
| Large Skipper | . | . | . | . | . | . | . | . | . | . | 8 | 16 | 30 | 15 | 8 | 5 | 3 | . | . | . | 1 | |||||
| Dingy Skipper | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 3 | 3 | . | . | . | 2 | 1 | 2 | 2 | . | . | . | . | . | . | 2 | 5 | . | 1 | . | . | |||||
| Large White | . | . | . | . | . | . | 1 | . | 1 | . | 2 | 1 | . | 10 | 11 | 5 | 17 | 7 | 18 | 2 | 6 | |||||
| Small White | . | . | . | . | . | 14 | 1 | . | 2 | . | . | . | 5 | 11 | 8 | 23 | 75 | . | . | 32 | . | |||||
| Green-veined White | . | 2 | 2 | 3 | 4 | 14 | 17 | 18 | 9 | 9 | . | . | . | 16 | 28 | 2 | 16 | 23 | . | 24 | . | |||||
| Orange Tip | . | . | . | . | 1 | 2 | 1 | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 3 | 2 | . | 1 | . | |||||
| Silver-studded Blue | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 2 | . | 2 | . | . | . | . | . | |||||
| Common Blue | . | . | . | . | . | . | 1 | . | 1 | . | 1 | 5 | 7 | . | . | 2 | 8 | 6 | 1 | 9 | . | |||||
| Red Admiral | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | . | . | 3 | 5 | |||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||
| Small Tortoiseshell | 2 | . | 2 | . | . | . | . | . | . | . | . | 2 | . | 5 | 2 | . | 5 | 12 | 2 | 47 | . | |||||
| Peacock | 2 | . | . | 5 | 1 | . | . | . | 2 | . | . | . | . | 4 | 1 | . | 9 | 2 | 1 | 2 | . | |||||
| Comma | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Speckled Wood | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | 2 | . | |||||
| Wall Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 6 | . | 2 | . | |||||
| Marbled White | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 20 | 20 | 14 | 28 | 3 | . | 1 | . | |||||
| Grayling | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 16 | 6 | 2 | 5 | . | |||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 26 | 36 | 49 | 107 | 31 | . | 3 | . | |||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | . | 8 | 17 | 73 | 85 | 34 | 43 | 101 | 20 | 22 | 4 | . | |||||
| Small Heath | . | . | . | . | . | . | . | . | 2 | 4 | 19 | 12 | 18 | 2 | 16 | . | 7 | . | 3 | 22 | 5 | |||||
| Ringlet | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | |||||