
| 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 | . | . | . | . | . | . | . | 13 | 9 | 8 | 2 | . | . | . | . | . | . | |||||||||
| Large Skipper | NI | . | . | . | . | . | . | . | 3 | 2 | . | . | . | . | . | . | . | . | |||||||||
| Dingy Skipper | 34 | . | . | . | 1 | 18 | 4 | 4 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | |||||||||
| Brimstone | NI | 2 | 1 | 2 | 2 | . | . | . | . | 1 | . | 2 | . | . | . | 1 | 1 | . | |||||||||
| Large White | NI | . | . | . | . | . | . | . | . | 10 | 10 | 1 | 3 | . | . | . | . | . | |||||||||
| Small White | NI | . | . | . | 2 | . | 3 | 2 | 5 | 22 | 27 | 11 | 20 | 8 | . | . | 1 | 1 | |||||||||
| Green-veined White | NI | . | . | . | . | 3 | 1 | 3 | . | 6 | 4 | 5 | . | 2 | . | . | . | . | |||||||||
| Orange Tip | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | NI | . | . | . | . | 1 | . | . | . | . | . | 2 | . | 1 | . | . | . | . | |||||||||
| Small Blue | NI | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brown Argus | NI | . | . | . | . | 3 | 2 | 6 | 5 | . | . | 2 | 1 | 1 | 1 | . | . | . | |||||||||
| Common Blue | NI | . | . | . | . | . | 12 | 11 | 24 | . | . | 4 | 7 | 2 | 5 | 6 | 4 | 3 | |||||||||
| Chalk-hill Blue | 337 | . | . | . | . | . | . | . | . | 11 | 127 | 82 | 22 | 11 | 4 | 2 | . | . | |||||||||
| Adonis Blue | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | NI | . | . | . | . | . | . | . | . | 5 | 1 | . | . | . | . | . | . | . | |||||||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | 1 | . | . | . | |||||||||
| Small Tortoiseshell | 126 | . | 3 | . | 5 | 1 | . | . | 3 | 17 | 1 | . | . | 5 | 12 | 18 | 11 | 21 | |||||||||
| Peacock | NI | 5 | 2 | 9 | 1 | 2 | . | 2 | . | 12 | 18 | 6 | 3 | . | 2 | 3 | 1 | 1 | |||||||||
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | |||||||||
| Speckled Wood | 87 | . | . | 2 | . | . | 13 | 4 | 1 | . | . | 1 | 3 | 24 | 13 | . | 5 | . | |||||||||
| Wall Brown | NI | . | . | . | . | 3 | . | . | . | . | . | 7 | . | 1 | . | . | . | . | |||||||||
| Marbled White | NI | . | . | . | . | . | . | . | 41 | 28 | 4 | . | . | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | 3 | 4 | . | 1 | . | . | . | . | . | |||||||||
| Meadow Brown | 1783 | . | . | . | . | . | . | . | 56 | 124 | 330 | 282 | 236 | 101 | 70 | 56 | 4 | 1 | |||||||||
| Small Heath | NI | . | . | . | . | . | 17 | 18 | 32 | 7 | . | . | . | 1 | 1 | 4 | 1 | . | |||||||||
| Ringlet | NI | . | . | . | . | . | . | . | 18 | 1 | . | . | . | . | . | . | . | . | |||||||||