
| 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 | 14 | 5 | 8 | 5 | 3 | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | NI | . | . | . | 1 | 5 | 14 | 15 | 12 | 8 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | NI | 3 | . | 2 | . | 1 | 7 | 4 | 4 | 1 | . | . | . | . | 6 | . | 8 | 9 | . | 1 | . | ||||||
| Large White | NI | . | . | . | . | . | . | . | 2 | 1 | . | 1 | 1 | . | 3 | 2 | . | 2 | 1 | . | . | ||||||
| Small White | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | 3 | 3 | 1 | . | ||||||
| Green-veined White | NI | 1 | . | 3 | 2 | 8 | 3 | . | 2 | 1 | . | . | 1 | 3 | 13 | 10 | 1 | 1 | . | . | . | ||||||
| Orange Tip | NI | 1 | . | 2 | 2 | 4 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | NI | . | . | 2 | 2 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Northern Brown Argus | NI | . | . | . | . | . | . | . | . | 2 | 1 | 13 | 2 | 10 | 10 | 1 | 1 | 3 | . | . | . | ||||||
| Common Blue | NI | . | . | . | . | . | . | . | . | 1 | . | 3 | 1 | 2 | 1 | 1 | 1 | . | . | . | . | ||||||
| Holly Blue | NI | 1 | 2 | 4 | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||||||
| Duke of Burgundy Fritillary | NI | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 3 | 1 | 4 | 3 | 2 | . | . | ||||||
| Painted Lady | NI | . | . | . | . | 4 | 5 | 8 | 12 | 5 | . | . | 1 | 1 | 46 | 40 | 26 | 9 | . | 1 | . | ||||||
| Small Tortoiseshell | NI | . | 1 | . | . | . | . | . | . | . | . | . | 9 | 10 | 12 | 7 | 1 | . | . | . | 1 | ||||||
| Peacock | NI | 11 | 12 | 16 | 5 | 6 | 5 | 2 | 2 | 1 | . | . | . | . | 16 | 8 | 32 | 7 | 1 | 1 | 1 | ||||||
| Comma | NI | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 2 | 2 | 1 | . | . | . | ||||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | . | . | 2 | 13 | 18 | 2 | . | . | . | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | NI | . | . | . | 1 | 42 | 62 | 78 | 59 | 19 | 1 | . | . | . | . | . | . | . | . | . | . | ||||||
| High Brown Fritillary | NI | . | . | . | . | . | . | . | . | . | 6 | 21 | 28 | 25 | 8 | 6 | . | 1 | . | . | . | ||||||
| Dark Green Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||
| Speckled Wood | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | 1 | . | ||||||
| Wall Brown | NI | . | . | . | . | . | . | 3 | 2 | . | . | . | . | . | . | . | 1 | 3 | . | . | . | ||||||
| Grayling | NI | . | . | . | . | . | . | . | . | . | 1 | 6 | 8 | 5 | 2 | . | . | . | . | . | . | ||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | 2 | 13 | 42 | 53 | 55 | 47 | 31 | 14 | 2 | . | . | . | ||||||