
| 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 | . | . | . | . | . | . | . | . | . | . | . | 12 | 22 | 8 | 12 | 6 | . | . | . | |||||||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 8 | 2 | |||||||
| Brimstone | 4 | . | 4 | . | . | 2 | . | . | . | . | . | . | . | . | 2 | 4 | . | . | . | |||||||
| Large White | . | . | . | . | . | 4 | . | . | 4 | . | . | 12 | 30 | 14 | 40 | 38 | 2 | . | . | |||||||
| Small White | . | . | . | 6 | . | . | . | . | 4 | . | . | 10 | . | 28 | 6 | 66 | 2 | 28 | . | |||||||
| Green-veined White | . | . | . | 6 | 24 | 16 | 16 | 2 | . | . | . | 16 | 56 | 24 | 52 | 4 | 4 | . | . | |||||||
| Orange Tip | . | . | . | 4 | 20 | 4 | . | 4 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 2 | . | 2 | 2 | 8 | . | |||||||
| Common Blue | . | . | . | . | . | . | . | 4 | 14 | . | 4 | . | . | 6 | 46 | 124 | 92 | 56 | 2 | |||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 2 | 6 | . | . | |||||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 8 | 4 | 6 | . | |||||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 10 | 26 | 10 | |||||||
| Peacock | 2 | . | 2 | 2 | . | . | . | 2 | . | . | . | . | . | . | 14 | 4 | 2 | 2 | . | |||||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||||||
| Marsh Fritillary | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | |||||||
| Speckled Wood | 2 | 4 | 6 | 6 | 10 | . | . | 10 | 8 | . | . | . | . | 6 | 6 | 4 | 16 | 26 | . | |||||||
| Marbled White | . | . | . | . | . | . | . | . | . | . | . | 98 | 110 | 54 | . | 6 | . | . | . | |||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 44 | 160 | 84 | 80 | 96 | . | . | . | |||||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | 46 | 62 | 506 | 784 | 488 | 562 | 512 | 82 | 58 | 2 | |||||||
| Ringlet | . | . | . | . | . | . | . | . | . | 6 | 4 | 52 | 46 | 10 | . | . | . | . | . | |||||||