
| 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 | ||||||||||||||||||||||||||
| Small Skipper | . | . | . | . | . | . | . | . | 6 | 42 | 115 | 159 | 122 | 103 | 8 | . | . | . | . | . | . | . | ||||
| Large Skipper | . | . | . | . | . | . | 8 | 34 | 39 | 14 | 10 | 6 | 5 | . | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | . | 4 | 16 | 5 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | 3 | 11 | 4 | 3 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 4 | 18 | 18 | 13 | 8 | 4 | 14 | 6 | 3 | 2 | 4 | 13 | 17 | 18 | 7 | . | 4 | . | . | . | . | . | ||||
| Large White | . | 2 | 1 | . | 3 | . | 2 | . | 1 | . | 8 | 14 | 14 | 10 | 1 | 5 | 1 | . | . | 1 | 1 | . | ||||
| Small White | . | 3 | 1 | 6 | 10 | 1 | 1 | 1 | 5 | 8 | 31 | 78 | 68 | 60 | 67 | 47 | 59 | 48 | 30 | 11 | 18 | . | ||||
| Green-veined White | 1 | 1 | . | . | 2 | 1 | . | . | . | . | . | 6 | 18 | 26 | 7 | 5 | 2 | . | . | . | . | . | ||||
| Orange Tip | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | . | . | . | 1 | 2 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Purple Hairstreak | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | . | 7 | 11 | 9 | 4 | 1 | . | 1 | 12 | 10 | 19 | 25 | 31 | 26 | 18 | 14 | 28 | 45 | 27 | 41 | 67 | 23 | ||||
| Brown Argus | . | . | . | 1 | 1 | 1 | . | 1 | . | . | . | 1 | 5 | 11 | 17 | 6 | 21 | 3 | 1 | . | . | . | ||||
| Common Blue | . | . | 1 | 6 | 4 | 1 | 4 | 1 | . | . | . | 24 | 74 | 62 | 53 | 17 | 38 | 7 | 3 | . | 1 | . | ||||
| Holly Blue | 1 | 4 | 3 | 4 | 2 | . | . | . | . | 1 | 11 | 27 | 12 | 7 | 6 | 4 | 4 | 2 | . | . | . | . | ||||
| White Admiral | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Red Admiral | . | . | . | . | . | . | 2 | . | 4 | . | . | . | 1 | 1 | . | 1 | 1 | 1 | 3 | 1 | 1 | . | ||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | 7 | 6 | 1 | . | . | 5 | 5 | 6 | 3 | 2 | 1 | 1 | 2 | . | ||||
| Peacock | . | . | . | 1 | 1 | . | . | 1 | . | . | 3 | 9 | 3 | 2 | 1 | 1 | 1 | . | . | . | . | 1 | ||||
| Comma | 1 | 2 | . | . | . | . | . | . | 5 | 5 | 7 | 5 | 1 | 6 | . | . | 1 | 1 | 3 | 2 | 4 | . | ||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | ||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||
| Speckled Wood | 1 | 11 | 5 | 7 | 18 | 2 | 15 | 16 | 15 | 9 | 4 | 19 | 24 | 17 | 18 | 12 | 20 | 16 | 8 | 13 | 17 | 2 | ||||
| Wall Brown | . | . | 1 | . | 1 | . | . | . | . | . | . | . | 6 | 10 | 23 | 10 | 1 | . | . | . | 2 | 1 | ||||
| Marbled White | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | 1 | 13 | 29 | 24 | 40 | 30 | 4 | 7 | . | . | . | . | . | ||||
| Meadow Brown | . | . | . | . | . | . | 4 | 30 | 96 | 87 | 171 | 228 | 293 | 309 | 495 | 372 | 328 | 148 | 77 | 40 | 9 | 4 | ||||
| Small Heath | . | . | 6 | 18 | 15 | 2 | 36 | 45 | 32 | 22 | 4 | 2 | 5 | 45 | 69 | 80 | 83 | 66 | 33 | 13 | 2 | . | ||||
| Ringlet | . | . | . | . | . | . | . | 2 | 40 | 106 | 77 | 57 | 11 | 5 | . | . | . | . | . | . | . | . | ||||