
| 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 | . | . | . | . | . | . | . | . | . | . | . | . | 10 | 2 | 6 | 4 | . | . | . | . | ||||||
| Large Skipper | . | . | . | . | . | . | . | 2 | 4 | . | 2 | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | . | 2 | 2 | 2 | 2 | 2 | . | . | . | . | . | . | . | . | . | 6 | 4 | 8 | . | . | ||||||
| Large White | . | . | . | . | . | 4 | . | 4 | 2 | 2 | . | . | . | 6 | 4 | 10 | 2 | 14 | . | . | ||||||
| Small White | . | . | . | . | . | 2 | . | . | . | . | . | . | . | 4 | . | 16 | 12 | . | 2 | . | ||||||
| Green-veined White | . | . | . | 10 | 10 | 2 | 10 | . | . | . | . | . | . | 26 | 36 | 8 | 14 | 10 | . | . | ||||||
| Orange Tip | . | 2 | 8 | 14 | 26 | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Purple Hairstreak | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | ||||||
| Small Copper | . | . | . | . | . | . | . | 2 | . | . | . | . | 4 | 2 | 4 | 10 | 10 | 6 | . | . | ||||||
| Common Blue | . | . | . | . | . | . | . | 4 | 2 | 8 | 8 | . | 14 | 2 | 48 | 12 | 22 | 6 | 6 | 4 | ||||||
| Red Admiral | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 2 | . | . | 6 | . | . | ||||||
| Small Tortoiseshell | . | . | . | . | . | 4 | . | . | . | . | . | . | 4 | 2 | . | 2 | . | . | . | . | ||||||
| Peacock | . | . | . | . | . | 4 | . | . | . | . | . | . | 2 | 6 | 4 | 4 | . | . | . | . | ||||||
| Small Pearl-bordered Fritillary | . | . | . | . | . | . | . | 2 | 6 | 2 | . | . | . | . | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | ||||||
| Speckled Wood | . | 2 | 2 | 2 | . | 4 | . | 4 | . | 2 | 6 | . | . | 2 | . | 8 | 2 | 28 | 20 | 18 | ||||||
| Marbled White | . | . | . | . | . | . | . | . | . | . | . | 10 | . | . | . | . | . | . | . | . | ||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | 28 | 14 | 22 | 6 | . | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | 4 | 130 | 202 | 330 | 456 | 910 | 80 | 84 | 58 | 6 | 8 | 8 | . | ||||||
| Ringlet | . | . | . | . | . | . | . | . | . | 26 | . | 24 | 20 | . | . | . | . | . | . | . | ||||||