
| 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 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Large Skipper | . | . | . | . | . | . | . | 1 | . | 2 | 7 | 5 | . | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 5 | 1 | . | 6 | 10 | 8 | 1 | 1 | . | . | . | . | 2 | . | 2 | 6 | 7 | 1 | . | 3 | ||||||
| Large White | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | 3 | . | . | 3 | . | . | . | ||||||
| Small White | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | . | . | . | ||||||
| Green-veined White | . | . | . | 1 | 1 | 1 | 7 | 2 | . | 1 | . | . | . | . | . | 3 | 1 | . | . | . | ||||||
| Orange Tip | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | . | . | . | . | . | . | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Holly Blue | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | ||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 2 | . | ||||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | ||||||
| Peacock | 1 | 1 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||
| Comma | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 5 | 8 | 2 | 1 | . | . | . | ||||||
| Heath Fritillary | . | . | . | . | . | . | . | 13 | 10 | 4 | 8 | . | . | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 5 | 4 | 4 | 5 | 10 | 8 | 13 | 7 | 8 | 8 | 1 | 2 | 3 | . | 4 | 4 | 14 | 5 | 5 | 1 | ||||||
| Marbled White | . | . | . | . | . | . | . | . | . | . | 6 | 12 | 14 | 15 | 6 | . | . | . | . | . | ||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 10 | 5 | 5 | 29 | 6 | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | 2 | 3 | 13 | 13 | 10 | 2 | 3 | 5 | . | 1 | . | ||||||
| Ringlet | . | . | . | . | . | . | . | . | . | 1 | 26 | 26 | 24 | 9 | 4 | . | . | . | . | . | ||||||