
| 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 | 73 | . | . | . | . | . | . | . | . | . | . | 5 | 5 | 13 | 10 | 16 | 16 | 5 | . | . | . | . | |||||
| Large Skipper | 45 | . | . | . | . | . | . | . | . | 2 | 14 | 11.5 | 13 | 2 | 1 | 2 | . | . | . | . | . | . | |||||
| Dingy Skipper | 34 | . | . | . | . | . | . | 9 | 10 | 9 | 6 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | |||||
| Large White | 20 | . | . | . | 2 | . | . | 4 | 1 | . | . | 0.5 | . | 2 | 4 | . | . | 3 | 3 | . | . | 1 | |||||
| Small White | 210 | . | . | . | . | 1 | . | 2 | 2 | 5 | 1 | 1.5 | . | . | 6 | 8 | 80 | 31 | 3 | 25 | 19 | 4 | |||||
| Green-veined White | 84 | . | . | 2 | 1 | 1 | . | 2 | . | 1 | 4 | . | . | 1 | 12 | 13 | 15 | 16 | 3 | 8 | . | . | |||||
| Orange Tip | 4 | . | . | . | . | 1 | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | 10 | . | . | 2 | 1 | . | 1 | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | 12 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 5 | 1 | 1 | 1 | |||||
| Small Blue | 33 | . | . | . | . | . | . | . | 7 | 7 | 14 | 2 | 2 | 1 | . | . | . | . | . | . | . | . | |||||
| Brown Argus | 22 | . | . | . | . | . | . | . | 4 | 4 | 1 | . | 1 | 1 | . | . | . | 2 | . | 3 | 2 | 1 | |||||
| Common Blue | 68 | . | . | . | . | . | . | . | 5 | 15 | 17 | 4.5 | 6 | 2 | . | 1 | . | . | 2 | 7 | 3 | 1 | |||||
| Chalk-hill Blue | 237 | . | . | . | . | . | . | . | . | . | . | . | . | . | 9 | 6 | 56 | 67 | 27 | 36 | 9 | 4 | |||||
| Red Admiral | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | |||||
| Painted Lady | 3 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | |||||
| Small Tortoiseshell | 25 | 1 | . | 1 | . | 1 | . | . | . | . | . | . | . | . | 3 | 2 | 7 | 6 | . | . | 2 | . | |||||
| Peacock | 21 | 2 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 4 | 1 | 1 | . | |||||
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | . | . | . | . | . | . | |||||
| Marsh Fritillary | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 8 | . | . | . | . | . | . | . | . | . | 3 | 0.5 | . | . | . | . | . | . | . | . | 1 | 2 | |||||
| Wall Brown | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||
| Marbled White | 132 | . | . | . | . | . | . | . | . | . | . | 12.5 | 37 | 44 | 28 | 10 | 1 | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 27 | . | . | . | . | . | . | . | . | . | . | 0.5 | . | 3 | 3 | 9 | 8 | 3 | . | . | . | . | |||||
| Meadow Brown | 664 | . | . | . | . | . | . | . | . | . | 9 | 40.5 | 46 | 53 | 62 | 36 | 98 | 83 | 37 | 82 | 35 | 24 | |||||
| Small Heath | 92 | . | . | . | . | . | . | . | 23 | 16 | 21 | 6.5 | 14 | 3 | 1 | 1 | 1 | . | . | . | 3 | 1 | |||||
| Ringlet | 98 | . | . | . | . | . | . | . | . | . | 1 | 35.5 | 27 | 22 | 11 | 2 | . | . | . | . | . | . | |||||