
| 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 | 18 | . | . | . | . | . | 2 | 3 | 4 | 4 | 4 | . | . | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | 54 | . | 13 | . | 7 | 13 | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | |||||||
| Brimstone | 61 | 3 | . | 10 | 3 | . | . | . | . | . | . | . | . | . | 2 | 2 | 3 | 7 | 16 | 3 | |||||||
| Large White | 90 | . | 5 | 4 | 8 | 8 | . | 4 | . | 2 | . | 2 | 2 | 13 | 4 | 5 | . | 15 | 4 | . | |||||||
| Small White | 7 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | 1 | . | . | 2 | 1 | . | |||||||
| Green-veined White | 76 | . | 4 | 5 | 6 | 4 | 2 | . | . | . | 1 | 2 | 6 | 17 | 11 | 1 | 1 | 8 | . | . | |||||||
| Orange Tip | 37 | . | 2 | 23 | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 5 | 1 | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Purple Hairstreak | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | |||||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||
| Northern Brown Argus | 192 | . | . | . | . | . | 23 | 26 | 31 | 41 | 28 | . | 18 | 11 | 2 | . | . | . | . | . | |||||||
| Common Blue | 61 | . | 4 | . | . | 13 | 5 | 6 | . | 8 | 1 | 1 | . | . | . | 1 | 2 | . | 3 | . | |||||||
| Holly Blue | 3 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||
| Red Admiral | 54 | . | 1 | . | . | . | 1 | . | . | . | 1 | . | . | 1 | 1 | 9 | 12 | 17 | 6 | 1 | |||||||
| Painted Lady | 12 | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | 1 | 4 | 1 | |||||||
| Small Tortoiseshell | 78 | . | 7 | 2 | 5 | 1 | 1 | . | . | . | . | 5 | . | 27 | 17 | 3 | 2 | 3 | . | 1 | |||||||
| Peacock | 602 | 9 | 2 | 21 | . | . | . | . | . | . | . | . | . | 3 | 37 | 87 | 113 | 162 | 107 | 5 | |||||||
| Comma | 40 | 2 | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | . | 3 | 6 | 17 | . | |||||||
| Small Pearl-bordered Fritillary | 69 | . | . | . | . | 4 | 19 | 10 | 11 | 6 | 4 | 1 | . | . | . | . | . | . | . | . | |||||||
| Pearl-bordered Fritillary | 184 | . | 75 | 1 | 45 | 36 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| High Brown Fritillary | 196 | . | . | . | . | . | . | . | 13 | 28 | 40 | 36 | 39 | 10 | 12 | 4 | . | . | 2 | . | |||||||
| Speckled Wood | 202 | . | 5 | 6 | 4 | 3 | 6 | 12 | 20 | 15 | 14 | 27 | . | 1 | 4 | 4 | 30 | 10 | 15 | 7 | |||||||
| Wall Brown | 179 | . | 32 | 2 | 21 | 12 | . | 1 | . | . | . | . | . | . | 8 | 5 | 22 | 9 | 26 | 4 | |||||||
| Grayling | 4 | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | 1 | . | . | . | . | . | |||||||
| Meadow Brown | 987 | . | . | . | . | . | . | 4 | 13 | 72 | 202 | 235 | 188 | 136 | 68 | 43 | 17 | 6 | 2 | . | |||||||
| Small Heath | 162 | . | 40 | . | 9 | 40 | 13 | 3 | . | 5 | 1 | 1 | . | . | . | . | . | . | . | . | |||||||