
| 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/Essex Skipper | NI | . | . | . | . | . | . | . | . | . | 5 | 50 | 42 | 31 | 59 | 38 | 12 | 1 | . | . | |||||||
| Large Skipper | 44 | . | . | . | . | . | . | . | 3 | 11 | 9 | 9 | 1 | 1 | 1 | 5 | 2 | . | . | . | |||||||
| Dingy Skipper | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 28 | . | . | 2 | 6 | 6 | 7 | 3 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | |||||||
| Wood White | 53 | . | 6 | 5 | 9 | 2 | 16 | 4 | 3 | 5 | . | . | . | . | . | 1 | 1 | 1 | . | . | |||||||
| Brimstone | 41 | 1 | 3 | 7 | 1 | 3 | . | 3 | . | . | . | . | . | . | 7 | 13 | 2 | 1 | . | . | |||||||
| Large White | 17 | . | . | 1 | . | 1 | 1 | . | . | 1 | . | . | 6 | 1 | 2 | 3 | 1 | . | . | . | |||||||
| Small White | 7 | . | . | 2 | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | . | 2 | . | |||||||
| Green-veined White | 8 | . | 1 | 1 | 2 | 2 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | |||||||
| Orange Tip | 5 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Common Blue | 5 | . | . | . | . | 1 | . | . | 2 | . | . | . | . | . | . | 1 | 1 | . | . | . | |||||||
| Holly Blue | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||
| Small Tortoiseshell | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Peacock | 9 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | . | . | . | |||||||
| Comma | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Small Pearl-bordered Fritillary | 2 | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Pearl-bordered Fritillary | 27 | . | 1 | . | 11 | 11 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Silver-washed Fritillary | 28 | . | . | . | . | . | . | . | . | . | 2 | 3 | 8 | 7 | 5 | 2 | 1 | . | . | . | |||||||
| Speckled Wood | 46 | 1 | . | . | 1 | . | 8 | 2 | 3 | 5 | 1 | . | . | . | . | 1 | 3 | 6 | 11 | 3 | |||||||
| Marbled White | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 254 | . | . | . | . | . | . | . | . | . | . | 1 | 31 | 12 | 66 | 42 | 77 | 21 | 4 | . | |||||||
| Meadow Brown | 661 | . | . | . | . | . | . | . | 2 | 18 | 48 | 60 | 178 | 137 | 78 | 49 | 60 | 19 | 8 | . | |||||||
| Small Heath | 80 | . | . | 2 | 16 | 21 | 6 | 5 | . | 9 | 5 | 2 | . | . | . | . | 1 | . | 3 | . | |||||||
| Ringlet | 70 | . | . | . | . | . | . | . | 11 | . | 8 | 42 | 17 | 1 | 1 | . | . | . | . | . | |||||||