
| 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 | 10 | . | . | . | . | . | . | . | . | 2 | 4 | . | . | 2 | . | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | 30 | . | . | . | . | 3 | 9 | 9 | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 93 | . | 5 | . | 2 | 7 | 6 | 2 | 4 | 2 | . | . | . | . | . | . | 6 | 12 | 20 | 11 | 5 | . | 2 | ||||
| Large White | 83 | . | . | . | 1 | 3 | 6 | 4 | 7 | 4 | . | 1 | . | . | 2 | 8 | 4 | 7 | 10 | 6 | 2 | . | . | ||||
| Small White | NI | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | ||||
| Green-veined White | 52 | 1 | . | 2 | 2 | 9 | 10 | 8 | 2 | . | . | . | . | . | . | 3 | 4 | 3 | 1 | 1 | . | . | . | ||||
| Orange Tip | 22 | . | 1 | . | 2 | 3 | 8 | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | 9 | . | . | . | 2 | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | ||||
| Northern Brown Argus | 178 | . | . | . | . | . | . | . | . | 37 | 36 | 29 | 19 | 11 | 9 | 1 | . | . | . | . | . | . | . | ||||
| Common Blue | 16 | . | . | . | . | . | 1 | . | . | . | . | 1 | 1 | 1 | . | 1 | 3 | 4 | 2 | . | . | . | . | ||||
| Holly Blue | NI | . | . | . | . | 2 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Red Admiral | 128 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 4 | 27 | 37 | 6 | 27 | 5 | 3 | 1 | ||||
| Painted Lady | 114 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 8 | 11 | 7 | 28 | 24 | 15 | 12 | ||||
| Small Tortoiseshell | 417 | 2 | 3 | 4 | 7 | 1 | 4 | 1 | 4 | 1 | . | . | 1 | 1 | 1 | 33 | 34 | 40 | 63 | 104 | 42 | 24 | 9 | ||||
| Peacock | 788 | 12 | 12 | 6 | 10 | 8 | 4 | 5 | 1 | . | . | . | . | . | . | 4 | 146 | 211 | 177 | 82 | 22 | 9 | 4 | ||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | . | . | . | 4 | 35 | 7 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | ||||
| Pearl-bordered Fritillary | 43 | . | . | . | . | 10 | 13 | 12 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| High Brown Fritillary | 89 | . | . | . | . | . | . | . | . | . | 6 | 18 | 7 | 11 | 6 | 13 | 10 | 6 | . | . | . | . | . | ||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||
| Speckled Wood | 307 | . | . | 2 | 12 | 12 | 3 | 3 | 2 | 18 | 18 | 11 | 5 | 6 | 9 | 6 | 24 | 32 | 12 | 18 | 26 | 25 | 28 | ||||
| Wall Brown | 100 | . | . | . | . | 7 | 4 | 3 | 9 | . | . | . | . | . | . | 1 | 11 | 15 | 14 | 9 | 9 | 4 | . | ||||
| Meadow Brown | 736 | . | . | . | . | . | . | . | . | 1 | 6 | 41 | 27 | 83 | 122 | 155 | 104 | 54 | 12 | 1 | . | . | . | ||||
| Small Heath | 10 | . | . | . | . | . | 2 | 1 | 4 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||