
| 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 | 25 | . | . | . | . | . | . | . | . | . | . | 1 | 8 | 4 | 6 | 4 | . | . | . | . | . | . | . | . | . | ||
| Dingy Skipper | 10 | . | . | . | . | . | 1 | 1 | 1 | 2 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Brimstone | 74 | 1 | 2 | 3 | . | 2 | . | 2 | 6 | 3 | 5 | . | 1 | . | . | . | 2 | . | 16 | 9 | 15 | 7 | . | . | . | ||
| Large White | 15 | . | . | . | . | . | . | 1 | 4 | 2 | . | . | 1 | . | 1 | 1 | 2 | 2 | . | . | . | . | . | . | . | ||
| Small White | 8 | . | . | . | . | 1 | 1 | . | 1 | 1 | . | . | 1 | . | . | . | 1 | . | 1 | 1 | . | . | . | . | . | ||
| Green-veined White | 20 | . | 1 | . | 1 | 5 | 1 | . | 1 | . | . | . | . | . | . | 2 | 2 | 1 | 3 | . | . | . | . | . | . | ||
| Orange Tip | 4 | . | . | . | 1 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Green Hairstreak | 3 | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Northern Brown Argus | 75 | . | . | . | . | . | . | . | . | . | . | 7 | 12 | 15 | 12 | 12 | 1 | 2 | 4 | 4 | . | . | . | . | . | ||
| Common Blue | 312 | . | . | . | . | . | . | . | . | . | . | 2 | 21 | 33 | 45 | 67 | 34 | 31 | 6 | 8 | 2 | 2 | . | . | . | ||
| Holly Blue | 11 | . | . | 2 | 1 | 3 | 1 | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Duke of Burgundy Fritillary | 14 | . | . | . | . | 1 | 1 | 4 | 2 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Red Admiral | 6 | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | 1 | 1 | 1 | . | . | 1 | . | . | . | ||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||
| Small Tortoiseshell | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | ||
| Peacock | 197 | 3 | 6 | 1 | 4 | 3 | 3 | 1 | . | 1 | . | . | . | . | . | . | 8 | 34 | 85 | 37 | 7 | 2 | . | . | . | ||
| Comma | 7 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | 1 | . | . | . | . | . | ||
| Small Pearl-bordered Fritillary | 192 | . | . | . | . | . | . | . | . | 1 | 13 | 49 | 61 | 46 | 13 | 7 | . | . | . | . | . | . | . | . | . | ||
| Pearl-bordered Fritillary | 28 | . | . | . | . | . | . | 7 | 9 | 5 | 5 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| High Brown Fritillary | 92 | . | . | . | . | . | . | . | . | . | . | . | 1 | 12 | 15 | 27 | 5 | 8 | 2 | 3 | . | . | . | . | . | ||
| Dark Green Fritillary | 115 | . | . | . | . | . | . | . | . | . | . | . | 18 | 23 | 31 | 16 | 10 | 3 | 2 | . | 1 | . | . | . | . | ||
| Silver-washed Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 7 | 4 | 2 | 1 | 3 | . | . | . | . | . | ||
| Speckled Wood | 486 | . | . | . | 6 | 10 | 19 | 4 | 4 | 2 | 5 | 8 | 33 | 31 | 33 | 17 | 19 | 15 | 22 | 25 | 26 | 34 | 52 | 55 | 52 | ||
| Wall Brown | 46 | . | . | . | . | . | . | 1 | 6 | 4 | 1 | . | . | . | . | . | . | . | 7 | 10 | 8 | 7 | 1 | 1 | . | ||
| Grayling | 17 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 1 | 4 | 2 | 1 | . | . | . | . | . | ||
| Meadow Brown | 239 | . | . | . | . | . | . | . | . | . | . | 1 | 10 | 19 | 43 | 55 | 30 | 20 | 8 | 4 | . | . | . | . | . | ||
| Small Heath | 42 | . | . | . | . | . | . | . | . | . | 1 | 4 | 1 | 4 | 1 | 7 | 5 | . | 4 | 3 | . | . | . | 1 | . | ||
| Chimney Sweeper | NI | . | . | . | . | . | . | . | . | 1 | 3 | 22 | 31 | . | . | 1 | . | . | . | . | . | . | . | . | . | ||
| Speckled Yellow | NI | . | . | . | 1 | 5 | 8 | 8 | 39 | 14 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Clouded Buff | NI | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Silver Y | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 7 | 1 | . | . | . | . | . | . | ||
| The Cinnabar | NI | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Small Purple-barred | NI | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||