
| 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 | 56 | . | . | . | . | . | 17 | 1 | 21 | 1 | 1 | 1 | . | 1 | 1 | . | . | . | . | . | . | ||||||
| Dingy Skipper | 10 | . | . | . | . | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 105 | 2 | 5 | 10 | 1 | 9 | 4 | . | . | . | . | . | . | 1 | 13 | 1 | 8 | 8 | 9 | 4 | 4 | ||||||
| Large White | 228 | . | . | . | 11 | 6 | 9 | 3 | 3 | . | 2 | 10 | 8 | 13 | 33 | 16 | 25 | 16 | 23 | 10 | 5 | ||||||
| Small White | 142 | . | 1 | . | 21 | 4 | 6 | . | 6 | 5 | . | 3 | 1 | 14 | 10 | 2 | 26 | 6 | 16 | 4 | 5 | ||||||
| Green-veined White | 35 | . | . | 12 | 5 | 3 | . | . | . | . | . | . | . | . | . | . | 6 | 1 | . | . | 2 | ||||||
| Orange Tip | 26 | . | 7 | 5 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 26 | . | 6 | 5 | 5 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 55 | . | . | 1 | . | 2 | . | . | 1 | 1 | . | . | . | 14 | 9 | 2 | 13 | . | 1 | 2 | . | ||||||
| Northern Brown Argus | 180 | . | . | . | 3 | . | 20 | 8 | 21 | 36 | 10 | 19 | 12 | 4 | 5 | 13 | . | . | . | . | . | ||||||
| Common Blue | 114 | . | . | . | 1 | 2 | 15 | 4 | 10 | 5 | 1 | . | 2 | 9 | 12 | . | 13 | . | . | . | . | ||||||
| Holly Blue | 3 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 41 | . | . | . | . | . | . | . | . | . | . | 4 | 1 | . | . | . | 18 | 16 | . | 1 | 1 | ||||||
| Small Tortoiseshell | 73 | 4 | 3 | . | . | . | . | . | . | . | 3 | 17 | 11 | 1 | . | 6 | 7 | 10 | . | 3 | 1 | ||||||
| Peacock | 209 | 14 | 5 | 6 | . | . | . | 1 | . | . | . | . | . | 53 | 54 | 2 | 26 | 19 | . | 2 | 3 | ||||||
| Small Pearl-bordered Fritillary | 56 | . | . | . | . | . | . | 13 | 27 | 2 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | 152 | . | . | 18 | 47 | 29 | 68 | 2 | 14 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| High Brown Fritillary | 183 | . | . | . | . | . | . | . | . | 53 | 40 | 73 | 28 | 17 | 20 | 3 | 1 | . | . | . | . | ||||||
| Speckled Wood | 85 | . | 2 | 2 | 3 | . | 7 | 1 | 3 | . | 1 | 1 | 1 | 4 | 10 | 12 | 9 | 11 | 4 | 2 | . | ||||||
| Wall Brown | 87 | . | . | . | 11 | 20 | . | . | . | . | . | . | . | . | . | 25 | 14 | 6 | . | . | . | ||||||
| Grayling | 14 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 4 | . | . | . | . | . | ||||||
| Meadow Brown | 500 | . | . | . | . | . | . | . | 5 | 60 | 65 | 118 | 66 | 60 | 44 | 2 | . | 9 | 13 | 3 | 6 | ||||||
| Small Heath | 125 | . | . | . | 22 | 32 | 25 | 18 | 13 | 2 | . | 3 | . | 1 | . | . | . | . | . | . | . | ||||||