
| 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 | 15 | . | . | . | . | . | . | 1 | 2 | 4 | 2 | 3 | 1 | . | . | . | . | . | |||||||||
| Dingy Skipper | 4 | . | . | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | NI | 1 | 1 | 2 | 2 | 3 | 2 | 2 | . | 1 | . | . | . | 3 | 6 | 19 | 14 | 8 | |||||||||
| Large White | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | . | . | |||||||||
| Small White | NI | . | 1 | . | . | . | . | . | . | . | . | 2 | 2 | 1 | 2 | . | 2 | . | |||||||||
| Green-veined White | NI | . | . | . | 3 | 2 | 1 | 1 | . | . | . | . | 2 | 1 | 3 | 1 | . | . | |||||||||
| Orange Tip | 3 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| White-letter Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||||||
| Northern Brown Argus | 44 | . | . | . | . | . | . | . | 6 | 9 | 4 | 6 | 8 | 3 | 1 | . | . | . | |||||||||
| Common Blue | NI | . | . | . | . | . | 1 | 1 | 1 | 3 | 2 | 1 | . | . | . | 5 | 3 | . | |||||||||
| Holly Blue | NI | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | NI | . | . | . | . | 1 | . | . | . | 1 | 1 | . | 1 | 1 | 9 | . | . | . | |||||||||
| Small Tortoiseshell | NI | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Peacock | NI | 1 | 10 | 8 | 3 | . | 3 | 1 | 1 | . | . | . | 1 | 8 | 27 | 39 | 12 | 3 | |||||||||
| Comma | NI | . | . | 2 | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | |||||||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | . | 2 | 10 | 9 | 8 | 2 | 1 | . | . | . | . | . | . | |||||||||
| Pearl-bordered Fritillary | 23 | . | . | . | 3 | 6 | 11 | 2 | . | . | . | . | . | . | . | . | . | . | |||||||||
| High Brown Fritillary | 60 | . | . | . | . | . | . | . | . | 2 | 5 | 9 | 12 | 8 | 4 | 4 | 4 | . | |||||||||
| Dark Green Fritillary | 14 | . | . | . | . | . | . | . | 3 | 2 | 5 | 3 | . | . | . | . | . | . | |||||||||
| Speckled Wood | NI | . | 2 | 3 | 5 | 1 | 2 | 4 | 17 | 14 | 22 | 9 | 5 | 2 | . | 9 | 21 | 17 | |||||||||
| Wall Brown | 39 | . | . | . | . | 4 | 5 | 1 | . | . | . | . | . | . | . | 11 | 16 | 2 | |||||||||
| Scotch Argus | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | 18 | 29 | 95 | 68 | 99 | 64 | 41 | 20 | 11 | 1 | |||||||||
| Small Heath | NI | . | . | 2 | 7 | 8 | 8 | 13 | 2 | . | . | . | . | . | . | . | . | . | |||||||||