
| 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 | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 6 | . | . | . | . | . | . | |||||
| Large Skipper | 53 | . | . | . | . | . | . | . | 1 | 4 | 6 | 16 | 9 | 8 | 2 | 1 | . | . | . | . | . | . | |||||
| Dingy Skipper | 4 | . | . | . | . | 1 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 230 | 2 | 16 | 23 | 21 | 13 | 18 | 10 | 4 | 2 | 4 | 1 | 4 | 6 | . | 2 | 18 | 23 | 17 | 12 | 8 | 3 | |||||
| Large White | 69 | . | . | . | . | . | . | 1 | 2 | 3 | . | 2 | 2 | 1 | . | 2 | 10 | 7 | 8 | 5 | 11 | 2 | |||||
| Small White | 16 | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | 3 | 5 | 2 | . | 1 | . | |||||
| Green-veined White | NI | . | . | . | 4 | . | 3 | 2 | 1 | 4 | 1 | 5 | 1 | . | . | 7 | 6 | 4 | 4 | 2 | . | . | |||||
| Orange Tip | 3 | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | 67 | . | . | . | . | 2 | 3 | 8 | 14 | 12 | 3 | 14 | 6 | 3 | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||
| Small Copper | 4 | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | |||||
| Common Blue | 33 | . | . | . | . | . | 1 | . | 2 | 1 | 1 | 3 | 1 | 1 | . | 3 | 4 | 6 | . | . | 1 | . | |||||
| Holly Blue | 23 | . | 2 | . | 3 | 1 | . | . | . | . | . | . | . | . | . | . | 5 | 4 | 5 | . | . | . | |||||
| Red Admiral | 4 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 2 | . | . | . | . | . | |||||
| Painted Lady | 9 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | 3 | . | . | . | |||||
| Small Tortoiseshell | 7 | . | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | 2 | . | . | . | |||||
| Peacock | NI | 15 | 11 | 5 | 4 | 1 | . | 1 | . | . | . | . | . | . | 1 | 7 | 48 | 15 | 8 | . | 2 | . | |||||
| Comma | 12 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 3 | 2 | 1 | . | 1 | . | |||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | . | 15 | 14 | 20 | 14 | 8 | 12 | . | . | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | 33 | . | . | . | 1 | 11 | 15 | 5 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Dark Green Fritillary | 2 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 50 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 8 | 7 | 8 | 3 | 1 | 1 | . | . | |||||
| Marsh Fritillary | 16 | . | . | . | . | . | . | 2 | 9 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Heath Fritillary | 127 | . | . | . | . | . | . | . | 14 | 26 | 7 | 31 | 34 | 10 | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 97 | 1 | 3 | 3 | 4 | . | 1 | 4 | 4 | 10 | 1 | 6 | 1 | 5 | . | 4 | 6 | 10 | 8 | 7 | 7 | 3 | |||||
| Marbled White | NI | . | . | . | . | . | . | . | . | . | . | . | . | 5 | 20 | 10 | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 324 | . | . | . | . | . | . | . | . | . | . | . | . | . | 22 | 74 | 45 | 28 | 19 | 4 | . | 1 | |||||
| Meadow Brown | 192 | . | . | . | . | . | . | . | . | . | 1 | 8 | 23 | 18 | 36 | 26 | 9 | 7 | 1 | . | 1 | . | |||||
| Small Heath | 6 | . | . | . | . | . | 1 | . | 1 | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Ringlet | 314 | . | . | . | . | . | . | . | . | . | . | 4 | 20 | 85 | 68 | 29 | 1 | . | . | . | . | . | |||||