
| 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 | 94 | . | . | . | . | . | 14 | 35 | 29 | 4 | 9 | 3 | . | . | . | . | . | . | |||||||||
| Dingy Skipper | 27 | . | . | . | 2 | 19 | 2 | 2 | 2 | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | 25 | . | . | . | . | . | . | . | . | . | . | 5 | 2 | 1 | . | 5 | 4 | 8 | |||||||||
| Brimstone | 10 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | 4 | . | 4 | |||||||||
| Large White | 85 | . | . | 10 | 17 | 7 | 2 | 4 | 1 | 1 | 2 | 4 | 6 | 6 | 6 | 9 | 3 | 7 | |||||||||
| Small White | 20 | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 17 | . | 1 | . | |||||||||
| Green-veined White | 93 | . | . | 20 | 22 | 7 | 1 | 2 | . | . | 2 | 3 | 12 | 5 | 3 | 7 | 4 | 5 | |||||||||
| Orange Tip | 20 | . | . | 11 | 8 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 11 | . | . | 4 | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | |||||||||
| Northern Brown Argus | 164 | . | . | . | . | . | 12 | 35 | 42 | 20 | 20 | 13 | 12 | 9 | 1 | . | . | . | |||||||||
| Common Blue | 47 | . | . | . | 1 | . | 6 | 15 | 7 | 2 | 3 | 1 | 1 | . | 2 | 5 | 3 | 1 | |||||||||
| Holly Blue | 2 | . | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||
| Red Admiral | 41 | . | . | . | . | 1 | . | . | 1 | . | 1 | 5 | 4 | 6 | 3 | 8 | 6 | 6 | |||||||||
| Painted Lady | 56 | . | . | . | . | . | . | 2 | 1 | . | . | 2 | . | 2 | 5 | 13 | 7 | 24 | |||||||||
| Small Tortoiseshell | 57 | . | 1 | 1 | . | . | . | . | . | . | 25 | 13 | 7 | 5 | . | 2 | 1 | 2 | |||||||||
| Peacock | 198 | 6 | 10 | 2 | 1 | 1 | . | . | . | . | . | . | . | 9 | 19 | 75 | 35 | 40 | |||||||||
| Small Pearl-bordered Fritillary | 361 | . | . | . | . | 2 | 81 | 106 | 141 | 30 | 1 | . | . | . | . | . | . | . | |||||||||
| Pearl-bordered Fritillary | 113 | . | . | 6 | 28 | 62 | 8 | 7 | 2 | . | . | . | . | . | . | . | . | . | |||||||||
| High Brown Fritillary | 311 | . | . | . | . | . | . | . | . | 24 | 102 | 81 | 50 | 28 | 19 | 7 | . | . | |||||||||
| Wall Brown | 156 | . | . | . | 11 | 15 | 5 | 10 | 1 | 2 | . | . | . | . | . | 29 | 36 | 47 | |||||||||
| Grayling | 6 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | 2 | . | . | 2 | |||||||||
| Meadow Brown | 1036 | . | . | . | . | . | . | 2 | 26 | 108 | 263 | 323 | 140 | 96 | 37 | 31 | 7 | 3 | |||||||||
| Small Heath | 168 | . | . | . | 1 | 16 | 58 | 47 | 33 | 7 | 1 | . | . | . | . | 4 | . | 1 | |||||||||