
| 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 | ||||||||||||||||||||||||||
| Small Skipper | 58 | . | . | . | . | . | . | . | . | . | 3 | 7 | 20 | 10.5 | 7 | 6 | . | . | . | . | . | . | |||||
| Large Skipper | 34 | . | . | . | . | . | . | 0.5 | 3 | 7.5 | 9 | 3 | 2 | 0.5 | 1 | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 2 | . | . | . | . | . | . | 0.5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 13 | 2 | 1 | 2 | 2 | . | 0.5 | . | . | . | . | . | . | 2 | . | . | . | . | . | . | 1 | . | |||||
| Large White | 58 | . | . | . | 3 | 2 | 3 | 2.5 | 1 | 2 | 1 | . | 3 | 8.5 | 4 | 13 | 3 | 2 | 3 | . | 1 | . | |||||
| Small White | 97 | . | . | . | . | 0.5 | 1.5 | 2 | . | 1 | 1 | 1 | 6 | 10.5 | 13 | 9 | 3 | 6 | 10 | 10 | 3 | . | |||||
| Green-veined White | 38 | . | . | . | . | 1.5 | 2.5 | 2 | 1 | 1.5 | . | 1 | 2 | 3.5 | 5 | 7 | 3 | 1 | 1 | 1 | 2 | . | |||||
| Orange Tip | 7 | . | 2 | 1 | 1 | 0.5 | 0.5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | |||||
| Small Copper | 160 | . | . | . | . | . | . | . | . | 0.5 | . | . | . | 5.5 | 8 | 11 | 8 | 10 | 16 | 29 | 16 | 10 | |||||
| Brown Argus | 13 | . | . | . | . | . | . | . | . | . | . | . | . | 0.5 | 2 | 3 | 2 | 3 | 1 | . | . | . | |||||
| Common Blue | 51 | . | . | . | . | . | . | 0.5 | . | . | . | . | . | 0.5 | 8 | 8 | 10 | 11 | 5 | 1 | 1 | . | |||||
| Duke of Burgundy Fritillary | 10 | . | . | . | . | 0.5 | 3.5 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| White Admiral | 13 | . | . | . | . | . | . | . | . | . | 3 | 4 | 1 | 0.5 | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 15 | . | . | . | . | . | . | . | . | 0.5 | 1 | . | 1 | 0.5 | . | . | . | 5 | 1 | 1 | 1 | . | |||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 0.5 | 1 | . | . | . | . | . | . | . | |||||
| Small Tortoiseshell | 42 | . | . | . | . | . | . | . | . | . | 2 | 4 | 2 | 0.5 | 2 | 7 | 1 | 10 | 6 | . | . | 0.5 | |||||
| Peacock | 84 | 2 | 10 | 5 | 4 | 2.5 | 3.5 | 1 | . | . | . | . | 3 | 30 | 9 | 5 | 2 | . | . | 2 | 1 | . | |||||
| Comma | 17 | 1 | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | 1 | . | 1 | 2 | 2 | 1 | 1 | |||||
| Small Pearl-bordered Fritillary | 4 | . | . | . | . | . | . | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | 9 | . | . | . | . | . | 1.5 | 4.5 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 26 | . | . | . | . | . | . | . | . | . | 1 | 4 | 10 | 5.5 | . | 2 | 1 | . | . | . | . | . | |||||
| Speckled Wood | 154 | . | 1 | . | 2 | 1 | 1 | 6.5 | 9 | 8 | 2 | 1 | 2 | 3 | 3 | 9 | 16 | 22 | 18 | 15 | 2 | 1.5 | |||||
| Wall Brown | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||
| Marbled White | 2 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 116 | . | . | . | . | . | . | . | . | . | . | . | 7 | 13 | 29 | 29 | 26 | 9 | 3 | . | . | . | |||||
| Meadow Brown | 149 | . | . | . | . | . | . | . | . | 4 | 19 | 33 | 34 | 16.5 | 8 | 3 | 5 | . | . | . | . | . | |||||
| Small Heath | 11 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | 3 | 3 | . | . | . | |||||
| Ringlet | 132 | . | . | . | . | . | . | . | . | 0.5 | 22 | 40 | 30 | 6.5 | 2 | . | . | . | . | . | . | . | |||||