
| 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 | ||||||||||||||||||||||||||
| Large Skipper | 13 | . | . | . | . | . | . | 1 | 1 | 2 | 2 | 2 | 3 | . | 1 | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | 2 | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 53 | 6 | 5 | 5 | 3 | 3 | 2 | . | 1 | . | . | . | . | . | . | 2 | 2 | 1 | 4 | 1 | 4 | 3 | 5 | ||||
| Large White | 24 | . | . | . | . | 4 | . | 1 | 1 | . | . | . | . | . | . | . | 6 | 4 | 1 | 1 | 2 | 2 | 1 | ||||
| Small White | 13 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 5 | 3 | 1 | . | ||||
| Green-veined White | 117 | . | . | 1 | 2 | 13 | 2 | 8 | 6 | 3 | 2 | . | . | 2 | 7 | 18 | 14 | 6 | 21 | 3 | 2 | 1 | . | ||||
| Orange Tip | 4 | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||
| Holly Blue | NI | . | . | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Tortoiseshell | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||
| Peacock | 73 | 16 | 8 | 6 | 3 | 1 | 4 | . | . | . | . | . | . | . | . | . | 4 | 1 | 14 | 1 | 2 | 2 | 2 | ||||
| Pearl-bordered Fritillary | 149 | . | . | . | 1 | 41 | 26 | 32 | 9 | 8 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| High Brown Fritillary | 32 | . | . | . | . | . | . | . | . | . | . | 4 | 7 | 9 | 4 | 4 | 4 | . | . | . | . | . | . | ||||
| Wall Brown | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | ||||
| Meadow Brown | 300 | . | . | . | . | . | . | . | . | . | 3 | 23 | 49 | 65 | 79 | 53 | 19 | 5 | 4 | . | . | . | . | ||||
| Small Heath | 2 | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||