
| 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 | NI | . | . | . | . | . | . | . | . | 1 | 6 | . | 2 | . | . | . | . | . | |||||||||
| Silver-spotted Skipper | 8 | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 2 | . | . | . | |||||||||
| Large Skipper | 67 | . | . | . | . | . | . | . | 7 | 1 | 16 | 17 | . | . | . | . | . | . | |||||||||
| Dingy Skipper | NI | . | . | . | . | 10 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | NI | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | 11 | 1 | 1 | 2 | . | . | . | . | 1 | . | . | . | 1 | 1 | 1 | . | 1 | . | |||||||||
| Large White | NI | . | . | . | . | . | . | . | . | . | 5 | 5 | 4 | 2 | 3 | . | . | . | |||||||||
| Small White | NI | . | . | . | . | 1 | . | . | . | . | 1 | 5 | 8 | 2 | 1 | . | . | . | |||||||||
| Green-veined White | NI | . | . | . | 1 | 1 | 1 | . | . | . | . | 19 | 4 | . | . | . | . | . | |||||||||
| Orange Tip | NI | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | NI | . | . | . | . | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | 1 | 4 | . | 3 | 2 | 1 | 1 | 1 | |||||||||
| Brown Argus | NI | . | . | . | . | 1 | 3 | 1 | . | . | . | . | . | 4 | 12 | 9 | . | . | |||||||||
| Common Blue | 100 | . | . | . | . | . | 5 | 5 | 6 | 4 | 1 | 1 | 3 | 15 | 16 | 17 | 5 | 1 | |||||||||
| Chalk-hill Blue | 64 | . | . | . | . | . | . | . | . | . | . | 22 | 9 | 8 | 5 | . | . | . | |||||||||
| Red Admiral | 3 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||||
| Small Tortoiseshell | 89 | . | . | . | . | . | . | . | . | 2 | 3 | 1 | . | 1 | 11 | 16 | 27 | 22 | |||||||||
| Peacock | 21 | 2 | 2 | 4 | . | . | . | . | . | . | . | 2 | 3 | . | 1 | . | 1 | . | |||||||||
| Comma | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Dark Green Fritillary | NI | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | |||||||||
| Speckled Wood | 69 | . | . | . | 2 | 1 | . | . | 7 | 2 | . | 5 | 5 | 4 | 7 | 13 | 7 | 4 | |||||||||
| Wall Brown | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||||
| Marbled White | 79 | . | . | . | . | . | . | . | 1 | 19 | 21 | 5 | . | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 11 | . | . | . | . | . | . | . | . | . | 1 | 2 | 3 | . | . | . | . | . | |||||||||
| Meadow Brown | 449 | . | . | . | . | . | . | 1 | 14 | 42 | 26 | 31 | 45 | 36 | 70 | 47 | 16 | 17 | |||||||||
| Small Heath | 219 | . | . | . | . | 2 | 11 | 9 | 36 | 47 | 14 | 22 | 2 | 3 | 2 | 1 | . | . | |||||||||
| Ringlet | 70 | . | . | . | . | . | . | . | 2 | 24 | 14 | . | . | 2 | 1 | . | . | . | |||||||||