
| 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 | 2 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | ||||
| Large Skipper | 12 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 4 | 4 | 2 | . | . | . | . | . | . | . | ||||
| Brimstone | 54 | 11 | . | 4 | 4 | 5 | 3 | . | 1 | 3 | . | . | 1 | . | 2 | 5 | . | 2 | 6 | . | . | 1 | . | ||||
| Large White | 21 | . | . | . | 1 | 2 | 2 | . | . | . | . | . | 3 | . | 2 | 4 | 1 | 2 | 1 | . | . | . | . | ||||
| Small White | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 7 | 1 | . | . | . | . | . | . | ||||
| Green-veined White | 59 | . | . | 3 | 6 | 6 | 5 | 2 | 1 | . | . | 2 | . | 2 | 5 | 7 | 8 | 4 | . | . | . | . | . | ||||
| Orange Tip | 4 | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | 6 | . | . | . | . | . | . | . | . | 2 | . | 1 | 3 | . | . | . | . | . | . | . | . | . | . | ||||
| Purple Hairstreak | 4 | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | . | . | . | . | . | . | . | . | ||||
| Small Copper | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | ||||
| Holly Blue | 19 | . | . | 3 | 4 | 4 | . | . | . | . | . | . | . | 1 | . | 5 | . | . | . | . | . | . | . | ||||
| White Admiral | 18 | . | . | . | . | . | . | . | . | . | . | . | 11 | 1 | 1 | 3 | 1 | . | . | . | . | . | . | ||||
| Red Admiral | 7 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | 4 | . | . | . | . | . | . | . | ||||
| Small Tortoiseshell | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||
| Peacock | 46 | 8 | 5 | 2 | 3 | 1 | . | . | . | . | . | . | . | . | 3 | 11 | 1 | 3 | 1 | . | . | 1 | . | ||||
| Comma | 7 | . | . | 1 | . | . | . | . | . | . | . | . | 2 | . | 3 | . | . | 1 | . | . | . | 1 | . | ||||
| Small Pearl-bordered Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | ||||
| Pearl-bordered Fritillary | 6 | . | . | . | . | 3 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| High Brown Fritillary | 6 | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | . | 2 | . | . | . | . | . | . | . | ||||
| Dark Green Fritillary | 5 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 2 | . | . | . | . | . | ||||
| Silver-washed Fritillary | 30 | . | . | . | . | . | . | . | . | . | . | . | 5 | 2 | 1 | 10 | 3 | 1 | 4 | . | . | . | . | ||||
| Speckled Wood | 64 | . | 1 | 1 | 3 | . | . | . | 5 | 4 | 1 | 3 | . | . | 1 | 5 | 7 | 5 | 5 | 7 | 1 | 1 | . | ||||
| Gatekeeper / Hedge Brown | 127 | . | . | . | . | . | . | . | . | . | . | . | . | 7 | 15 | 32 | 24 | 9 | 12 | 3 | . | . | . | ||||
| Meadow Brown | 226 | . | . | . | . | . | . | . | . | 1 | 1 | 9 | 48 | 19 | 31 | 35 | 17 | 22 | 11 | 3 | 1 | . | 1 | ||||
| Small Heath | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||
| Ringlet | 23 | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | 3 | 9 | 2 | 1 | 2 | . | . | . | . | ||||