
| 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 | 37 | . | . | . | . | . | . | . | . | 2 | 9 | 10 | 4 | . | . | . | . | . | |||||||||
| Large Skipper | 14 | . | . | . | . | . | . | . | 6 | 1 | 7 | . | . | . | . | . | . | . | |||||||||
| Brimstone | 20 | 2 | 7 | 3 | . | 1 | . | . | . | . | . | 2 | . | 1 | . | . | . | . | |||||||||
| Large White | 51 | . | . | 1 | 1 | . | 1 | . | 1 | . | 2 | 4 | 8 | 12 | 3 | . | 1 | 1 | |||||||||
| Small White | 10 | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | 2 | . | . | |||||||||
| Green Hairstreak | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | 21 | . | . | . | 1 | . | . | . | 1 | 5 | 2 | 3 | 4 | . | . | . | . | 2 | |||||||||
| Silver-studded Blue | 49 | . | . | . | . | . | 1 | 4 | 13 | 16 | 5 | 4 | . | . | . | . | . | . | |||||||||
| Common Blue | 21 | . | . | . | . | . | 2 | . | 3 | . | . | 4 | 4 | 1 | 3 | . | . | . | |||||||||
| Holly Blue | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 15 | . | . | . | . | . | 1 | . | . | 1 | . | 3 | 1 | 1 | 4 | . | . | 1 | |||||||||
| Painted Lady | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||||
| Small Tortoiseshell | 28 | 2 | 5 | 3 | . | . | . | . | 1 | 3 | 3 | . | 2 | . | . | . | . | . | |||||||||
| Peacock | 34 | 4 | 3 | 1 | . | . | . | . | . | . | . | 3 | 5 | 1 | 3 | . | . | . | |||||||||
| Comma | 3 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Silver-washed Fritillary | 7 | . | . | . | . | . | . | . | . | . | 1 | 1 | 3 | . | . | . | . | . | |||||||||
| Speckled Wood | 45 | . | 3 | 2 | 2 | 2 | 1 | 1 | 1 | . | . | 2 | 2 | 9 | 5 | 3 | . | . | |||||||||
| Wall Brown | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||||
| Grayling | 12 | . | . | . | . | . | . | . | . | . | . | . | 6 | 3 | . | 2 | . | . | |||||||||
| Gatekeeper / Hedge Brown | 64 | . | . | . | . | . | . | . | . | . | 1 | 11 | 11 | 16 | 4 | . | . | . | |||||||||
| Meadow Brown | 117 | . | . | . | . | . | 3 | . | 11 | 11 | 14 | 16 | 11 | 14 | 9 | . | . | . | |||||||||
| Small Heath | 26 | . | . | . | . | . | 1 | . | . | 2 | 3 | . | . | 5 | . | . | . | . | |||||||||