
| 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 | ||||||||||||||||||||||||||
| Large Skipper | 17 | . | . | . | . | . | . | . | 1 | 4 | 1 | 1 | 5 | . | 2 | 2 | . | . | . | ||||||||
| Brimstone | 72 | 7 | 10 | 12 | 2 | 5 | 1 | . | 1 | . | . | 1 | 1 | 1 | 1 | 3 | 3 | . | . | ||||||||
| Large White | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||||
| Small White | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | ||||||||
| Green-veined White | 69 | . | 2 | 2 | 5 | 8 | 2 | 5 | 1 | . | . | 1 | 4 | 7 | 7 | 12 | 4 | . | . | ||||||||
| Orange Tip | 8 | 1 | 3 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | 15 | . | . | . | . | 2 | 1 | . | 6 | 3 | 2 | . | . | . | . | . | . | . | . | ||||||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||||
| Holly Blue | 8 | . | . | 2 | . | . | . | 1 | . | . | . | . | . | 1 | 1 | 1 | . | . | . | ||||||||
| White Admiral | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | ||||||||
| Red Admiral | NI | . | . | . | . | . | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||||||||
| Small Tortoiseshell | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||||
| Peacock | NI | 3 | 5 | 3 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Comma | NI | 5 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||||
| Small Pearl-bordered Fritillary | 3 | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | ||||||||
| Pearl-bordered Fritillary | 11 | . | . | . | 1 | . | 4 | 5 | 1 | . | . | . | . | . | . | . | . | . | . | ||||||||
| High Brown Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | ||||||||
| Silver-washed Fritillary | 20 | . | . | . | . | . | . | . | . | . | . | 4 | . | 4 | 3 | 1 | 3 | . | . | ||||||||
| Speckled Wood | 46 | . | . | 2 | . | 2 | 1 | 2 | 1 | 6 | 2 | . | . | . | 3 | 2 | 5 | 1 | 4 | ||||||||
| Gatekeeper / Hedge Brown | 115 | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 13 | 19 | 17 | 18 | 8 | . | ||||||||
| Meadow Brown | 49 | . | . | . | . | . | . | . | . | . | 5 | 10 | 6 | 8 | 4 | 3 | 2 | . | . | ||||||||
| Small Heath | 9 | . | . | . | . | . | 1 | . | 1 | . | 2 | 2 | . | . | . | . | . | . | . | ||||||||
| Ringlet | 16 | . | . | . | . | . | . | . | . | . | . | 5 | 8 | 1 | 2 | . | . | . | . | ||||||||