
| 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 | ||||||||||||||||||||||||||
| Small Skipper | NI | . | . | . | . | . | . | . | . | . | . | 5 | 3 | 4 | . | . | . | . | . | . | . | ||||||
| Large Skipper | NI | . | . | . | . | . | 3 | 5 | 10 | 16 | 11 | 5 | 1 | 1 | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Wood White | NI | . | . | . | . | . | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 11 | 1 | . | 3 | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 3 | 1 | . | . | . | . | ||||||
| Large White | NI | . | . | . | . | . | . | . | . | 2 | . | . | 4 | 11 | 5 | 2 | 3 | 1 | . | . | . | ||||||
| Small White | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||
| Green-veined White | NI | . | . | 5 | 7 | 4 | 2 | . | 1 | . | 4 | 47 | 72 | 110 | 67 | 25 | 22 | 16 | 2 | 3 | . | ||||||
| Orange Tip | NI | 1 | . | 6 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Purple Hairstreak | NI | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | 1 | . | 1 | . | . | . | ||||||
| Holly Blue | NI | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| White Admiral | NI | . | . | . | . | . | . | . | 1 | 3 | 7 | 1 | 1 | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 3 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | 1 | . | . | ||||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||
| Small Tortoiseshell | 3 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||
| Peacock | NI | 13 | 11 | 13 | . | . | . | . | . | . | . | . | 2 | 5 | 8 | 17 | 12 | 2 | . | . | . | ||||||
| Comma | 13 | . | . | . | . | . | . | 1 | . | 2 | 3 | 2 | 1 | . | . | . | . | . | . | 2 | 2 | ||||||
| Silver-washed Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | 3 | . | . | . | . | ||||||
| Speckled Wood | 68 | . | . | 1 | . | . | 6 | 4 | 6 | 3 | 1 | . | 1 | 5 | 4 | 5 | 9 | 3 | 9 | 4 | 4 | ||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | 8 | 14 | 35 | 20 | 9 | 6 | 1 | . | . | . | ||||||
| Meadow Brown | NI | . | . | . | . | . | 1 | 6 | 13 | 32 | 23 | 53 | 36 | 35 | 19 | 11 | 4 | 3 | . | . | . | ||||||
| Ringlet | NI | . | . | . | . | . | . | 11 | 45 | 182 | 156 | 106 | 45 | 13 | 1 | . | . | . | . | . | . | ||||||
| Silver Y | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | ||||||