
| 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 | ||||||||||||||||||||||||||
| Large Skipper | . | . | . | . | . | . | . | . | . | 3 | 6 | 4 | 2 | . | . | 1 | . | . | . | . | . | |||||
| Dingy Skipper | . | . | . | . | . | 1 | 10 | 10 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 2 | 5 | 7 | 8 | 1 | 4 | 3 | 4 | 1 | 2 | . | . | . | . | . | . | 4 | 8 | 19 | 8 | 1 | |||||
| Large White | . | . | . | . | . | . | 1 | . | 2 | . | 1 | . | . | . | . | 1 | 4 | 3 | 5 | . | . | |||||
| Small White | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 2 | . | . | 4 | 7 | 2 | 6 | |||||
| Green-veined White | 1 | . | . | 4 | 8 | 22 | 25 | 19 | 42 | 11 | 20 | 9 | 2 | 2 | 49 | 71 | 80 | 73 | 98 | 15 | 9 | |||||
| Orange Tip | 1 | 1 | 10 | 18 | 12 | 24 | 11 | 2 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | . | . | . | 3 | 1 | 3 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | |||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | 2 | |||||
| Northern Brown Argus | . | . | . | . | . | . | . | . | 4 | 27 | 36 | 18 | 20 | 12 | 6 | 2 | . | 1 | . | . | . | |||||
| Common Blue | . | . | . | . | . | . | . | 1 | 2 | 4 | 6 | 5 | . | 5 | 5 | 2 | . | . | . | 2 | . | |||||
| Holly Blue | . | 1 | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Red Admiral | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | 2 | 5 | 7 | 8 | 10 | 4 | . | 5 | |||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||
| Small Tortoiseshell | 2 | 19 | 22 | 8 | 11 | 13 | 7 | 2 | . | . | . | . | 4 | 2 | 37 | 137 | 33 | 13 | 2 | 9 | 15 | |||||
| Peacock | 12 | 26 | 39 | 29 | 39 | 21 | 16 | 4 | . | 3 | . | . | . | . | . | 15 | 120 | 160 | 160 | 12 | 1 | |||||
| Comma | 1 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 3 | 1 | . | 1 | . | |||||
| Small Pearl-bordered Fritillary | . | . | . | . | . | . | . | . | 3 | 18 | 26 | 3 | 4 | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | . | . | . | . | . | 3 | 12 | 16 | 11 | 3 | . | . | . | . | . | . | . | . | . | . | . | |||||
| High Brown Fritillary | . | . | . | . | . | . | . | . | . | . | 1 | 18 | 28 | 86 | 39 | 18 | 8 | 13 | 14 | 3 | . | |||||
| Speckled Wood | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | . | . | . | 1 | 3 | . | . | |||||
| Wall Brown | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 10 | 9 | . | |||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | 6 | 18 | 35 | 54 | 81 | 94 | 79 | 29 | 42 | 38 | 7 | . | |||||
| Small Heath | . | . | . | . | . | 15 | 45 | 49 | 20 | 11 | 5 | 5 | . | . | . | . | . | . | . | . | . | |||||