
| 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 | . | . | . | . | . | . | . | . | . | . | 16 | 30 | 32 | . | . | . | . | |||||||||
| Silver-spotted Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 5 | 3 | . | |||||||||
| Large Skipper | 55 | . | . | . | . | . | . | 1 | 4 | 9 | 13 | 7 | 14 | . | . | . | . | . | |||||||||
| Dingy Skipper | 33 | . | . | 1 | 7 | 5 | 9 | 3 | 2 | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 4 | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | |||||||||
| Brimstone | NI | 1 | 5 | 4 | 3 | 3 | 4 | . | 1 | 1 | . | 1 | . | 6 | 1 | 3 | 5 | 1 | |||||||||
| Large White | NI | . | . | . | . | . | . | . | . | . | . | 1 | 6 | 9 | 12 | 8 | 3 | . | |||||||||
| Small White | NI | . | . | . | . | 1 | . | . | . | . | . | . | 4 | 33 | 9 | 15 | 22 | 10 | |||||||||
| Green-veined White | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||||||
| Orange Tip | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 5 | . | . | . | 1 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | 1 | 2 | . | . | 1 | 1 | . | . | . | |||||||||
| Small Blue | NI | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | |||||||||
| Brown Argus | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Common Blue | NI | . | . | . | . | . | . | 1 | 1 | . | . | . | . | 9 | 4 | 19 | 11 | . | |||||||||
| Chalk-hill Blue | NI | . | . | . | . | . | . | . | . | . | . | . | 12 | 503 | 380 | 178 | 57 | . | |||||||||
| Duke of Burgundy Fritillary | 3 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | NI | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | |||||||||
| Painted Lady | 14 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 2 | 1 | . | . | |||||||||
| Small Tortoiseshell | 11 | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | 1 | 1 | |||||||||
| Peacock | NI | 4 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Dark Green Fritillary | NI | . | . | . | . | . | . | . | . | . | . | 2 | . | 2 | . | . | . | . | |||||||||
| Speckled Wood | 44 | . | 1 | 1 | . | . | . | 1 | 4 | 2 | . | 3 | 1 | 2 | 3 | 4 | 5 | 2 | |||||||||
| Wall Brown | NI | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | . | |||||||||
| Marbled White | 218 | . | . | . | . | . | . | . | . | 9 | 39 | 60 | 73 | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | 1 | 11 | 20 | 21 | 4 | . | . | |||||||||
| Meadow Brown | 506 | . | . | . | . | . | . | . | 1 | 13 | 22 | 15 | 27 | 73 | 59 | 56 | 42 | 6 | |||||||||
| Small Heath | 157 | . | . | . | . | 1 | 7 | 3 | 5 | 9 | 20 | 22 | 26 | 2 | 5 | 10 | 12 | . | |||||||||
| Ringlet | 44 | . | . | . | . | . | . | . | . | 8 | 4 | 18 | 9 | . | . | . | . | . | |||||||||