
| 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 | . | . | . | . | . | . | 4 | . | . | . | 2 | 4 | . | 8 | 6 | 2 | . | . | . | |||||||
| Large Skipper | . | . | . | . | . | . | 52 | 6 | 10 | 16 | 22 | 4 | 14 | . | . | . | . | . | . | |||||||
| Grizzled Skipper | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | . | . | 4 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Large White | . | . | . | . | . | . | . | . | 2 | . | . | . | . | 4 | 6 | 6 | 6 | 6 | 6 | |||||||
| Small White | . | . | 4 | 4 | 6 | 6 | 8 | . | . | . | . | . | . | 14 | 8 | 6 | 6 | 4 | 4 | |||||||
| Green-veined White | . | 4 | 56 | 52 | 6 | 2 | . | . | . | . | . | 2 | 10 | 34 | 62 | 32 | 16 | 8 | 8 | |||||||
| Orange Tip | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 10 | 4 | . | . | . | |||||||
| Common Blue | . | . | . | . | 30 | 32 | 60 | 2 | 10 | 10 | 6 | . | 2 | . | 8 | 6 | 6 | 6 | 6 | |||||||
| Holly Blue | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | |||||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | |||||||
| Peacock | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | 4 | 2 | . | . | . | |||||||
| Comma | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 14 | 6 | . | . | . | |||||||
| Speckled Wood | . | . | . | . | . | . | 22 | . | . | . | . | . | 2 | 2 | 6 | 8 | 12 | 16 | 20 | |||||||
| Marbled White | . | . | . | . | . | . | . | . | 2 | 2 | 22 | 18 | 8 | 8 | 2 | 2 | . | . | . | |||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 6 | 30 | 106 | 156 | 78 | . | . | . | |||||||
| Meadow Brown | . | . | . | . | . | . | 254 | 256 | 368 | 196 | 338 | 246 | 174 | 114 | 140 | 112 | 56 | 28 | 14 | |||||||
| Small Heath | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Ringlet | . | . | . | . | . | . | . | . | 106 | 58 | 62 | 34 | 8 | 14 | . | . | . | . | . | |||||||