
| 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 | 6 | . | . | . | . | . | . | . | . | 2 | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | 8 | . | . | . | 1 | . | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Clouded Yellow | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||
| Brimstone | 42 | 1 | 4 | 2 | 10 | 2 | 2 | . | 3 | . | . | . | . | . | 2 | 1 | 1 | . | 1 | 2 | 1 | . | 1 | ||||
| Large White | 10 | . | . | . | . | . | 2 | . | 2 | . | . | . | . | . | 1 | . | . | 1 | 2 | . | . | . | . | ||||
| Small White | 4 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | ||||
| Green-veined White | 7 | . | . | . | 1 | . | 1 | 2 | . | . | . | . | 1 | 2 | . | . | . | . | . | 1 | . | . | . | ||||
| Orange Tip | 6 | . | . | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | 5 | . | . | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||
| Northern Brown Argus | 3 | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Common Blue | 6 | . | . | . | . | . | 3 | . | 2 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Holly Blue | 9 | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | 2 | . | . | 1 | . | . | 1 | . | . | ||||
| Red Admiral | 44 | . | . | 1 | . | 3 | 1 | . | 2 | . | . | 1 | 2 | 6 | 5 | 4 | 2 | 1 | 2 | . | . | 4 | 1 | ||||
| Painted Lady | 32 | . | . | . | . | . | . | . | 1 | 1 | 2 | . | 1 | . | . | 5 | 16 | 1 | . | . | . | . | . | ||||
| Small Tortoiseshell | 6 | . | . | 1 | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | 2 | . | . | . | ||||
| Peacock | 83 | 12 | 12 | 9 | 3 | . | . | . | . | . | . | . | . | 1 | 6 | 5 | 1 | 2 | . | 2 | 2 | 1 | . | ||||
| Comma | 31 | . | . | 1 | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | 3 | 6 | 9 | 8 | ||||
| Small Pearl-bordered Fritillary | 8 | . | . | . | . | . | . | . | 6 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Pearl-bordered Fritillary | 81 | . | . | . | 19 | 28 | 8 | 6 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| High Brown Fritillary | 99 | . | . | . | . | . | . | . | . | . | 12 | 15 | 20 | 35 | 18 | . | . | . | . | . | . | . | . | ||||
| Dark Green Fritillary | 23 | . | . | . | . | . | . | . | . | . | 9 | 4 | 6 | 6 | 2 | . | . | . | . | . | . | . | . | ||||
| Speckled Wood | 463 | . | 1 | 13 | 30 | 13 | 7 | 2 | 15 | 13 | 44 | 52 | 17 | 17 | 16 | 11 | 8 | 10 | 15 | 27 | 45 | 69 | 33 | ||||
| Wall Brown | 22 | . | . | . | 1 | . | 3 | 6 | 3 | . | 1 | . | . | . | . | 2 | 3 | 2 | 1 | . | . | . | . | ||||
| Meadow Brown | 180 | . | . | . | . | . | . | . | . | 1 | 14 | 21 | 32 | 60 | 32 | 9 | . | 1 | . | . | . | . | . | ||||
| Small Heath | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Six-spot Burnet | NI | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Chimney Sweeper | NI | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Speckled Yellow | NI | . | . | . | 7 | 3 | 8 | 5 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Silver Y | NI | . | . | . | 1 | . | 2 | . | 3 | . | 1 | 2 | 4 | 4 | 4 | . | 1 | . | 18 | 4 | 10 | 4 | . | ||||