
| 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 | NI | . | . | . | . | . | . | 2 | 2 | 1 | . | . | . | . | . | . | . | . | . | ||||||||
| Dingy Skipper | NI | . | 3 | 6 | 6 | 7 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||||
| Large White | NI | . | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | . | ||||||||
| Small White | NI | . | . | . | . | . | . | . | . | 3 | . | 1 | 2 | . | 1 | . | . | . | . | ||||||||
| Green-veined White | NI | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Northern Brown Argus | 25 | . | . | . | . | . | . | 2 | 4 | 8 | 2 | 4 | 3 | . | . | 2 | . | . | . | ||||||||
| Common Blue | NI | . | . | . | . | . | . | 3 | 29 | 25 | 26 | 26 | 15 | 9 | 6 | 6 | 1 | . | . | ||||||||
| Duke of Burgundy Fritillary | NI | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Red Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||||
| Small Tortoiseshell | 17 | . | . | . | . | . | . | . | . | 1 | 1 | 9 | 3 | 1 | 2 | . | . | . | . | ||||||||
| Peacock | NI | . | . | . | . | . | . | . | . | . | . | . | 4 | 1 | 16 | 16 | 3 | 3 | . | ||||||||
| Comma | 2 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | ||||||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | 5 | 11 | 12 | 16 | 13 | 1 | . | . | . | . | . | . | . | . | ||||||||
| Pearl-bordered Fritillary | 57 | . | 13 | 27 | 12 | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| High Brown Fritillary | 197 | . | . | . | . | . | . | . | 6 | 48 | 53 | 45 | 31 | 8 | 9 | 1 | . | . | . | ||||||||
| Dark Green Fritillary | NI | . | . | . | . | . | 1 | 1 | 30 | 21 | 7 | 1 | 4 | 1 | . | . | . | . | . | ||||||||
| Silver-washed Fritillary | NI | . | . | . | . | . | . | . | . | . | . | 4 | 1 | 1 | . | 1 | . | 1 | . | ||||||||
| Speckled Wood | 9 | . | . | . | . | . | . | 1 | 2 | . | 1 | . | 1 | 2 | . | . | 2 | . | . | ||||||||
| Wall Brown | NI | . | . | 3 | 2 | . | . | . | 2 | . | . | . | . | . | 1 | 3 | 3 | 10 | . | ||||||||
| Grayling | NI | . | . | . | . | . | . | . | 1 | 25 | 69 | 125 | 147 | 89 | 56 | 91 | 27 | 6 | . | ||||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | 14 | 32 | 16 | 27 | 14 | 4 | 4 | 6 | . | . | . | ||||||||
| Small Heath | NI | . | . | . | 1 | 2 | 3 | 2 | 9 | 21 | 13 | 26 | 40 | 15 | 26 | 15 | 11 | 16 | 1 | ||||||||