
| 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 | 15 | . | . | . | . | 2 | 2 | 3 | 4 | . | . | . | . | . | . | . | . | . | |||||||||
| Dingy Skipper | 13 | . | . | 4 | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | 4 | 1 | 1 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | |||||||||
| Large White | 169 | 1 | . | 3 | 3 | 3 | . | 1 | 3 | 5 | 10 | 27 | 31 | 47 | 14 | 3 | 1 | 10 | |||||||||
| Small White | 69 | . | . | . | . | 1 | . | . | . | 1 | 1 | 2 | 15 | 17 | 18 | 3 | 2 | 7 | |||||||||
| Green-veined White | 6 | . | 1 | 1 | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | |||||||||
| Orange Tip | NI | 5 | 1 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | NI | 24 | 14 | 14 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Northern Brown Argus | 316 | . | . | . | 1 | 19 | 55 | 99 | 36 | 17 | 14 | 7 | . | . | . | . | . | . | |||||||||
| Common Blue | 18 | . | . | . | 1 | . | 6 | 4 | . | . | . | 3 | . | . | 2 | . | . | . | |||||||||
| Holly Blue | NI | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 53 | . | . | . | . | . | . | . | 5 | 3 | 1 | 4 | . | . | . | 8 | 12 | 8 | |||||||||
| Painted Lady | 4 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | . | |||||||||
| Small Tortoiseshell | 51 | 1 | 1 | . | . | . | . | . | 2 | 7 | 9 | 8 | 3 | 6 | 8 | 1 | 1 | . | |||||||||
| Peacock | 49 | 8 | . | . | . | . | . | . | . | 1 | 5 | 17 | 1 | 7 | 2 | . | . | . | |||||||||
| Small Pearl-bordered Fritillary | 42 | . | . | . | 2 | 13 | 15 | 7 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Pearl-bordered Fritillary | 50 | . | 23 | 10 | 1 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| High Brown Fritillary | 88 | . | . | . | . | . | . | 17 | 7 | 18 | 18 | 6 | 8 | 1 | 1 | . | . | . | |||||||||
| Wall Brown | 79 | . | . | . | 5 | 3 | 1 | 3 | 1 | . | . | . | 21 | 15 | 19 | 5 | . | . | |||||||||
| Grayling | 18 | . | . | . | . | . | . | . | 1 | 4 | 3 | . | 8 | . | 2 | . | . | . | |||||||||
| Meadow Brown | 251 | . | . | . | . | . | . | . | 45 | 53 | 57 | 64 | 6 | 2 | 2 | . | . | . | |||||||||
| Small Heath | 86 | . | 5 | 6 | 14 | 16 | 23 | 4 | 1 | . | . | . | . | 1 | . | . | . | . | |||||||||