
| 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 | . | . | . | . | . | . | . | 3 | 6 | 35 | 1 | 5 | 9 | 8 | . | . | . | . | ||||||||
| Silver-spotted Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | 2 | 16 | 18 | . | . | . | . | ||||||||
| Large Skipper | 34 | . | . | . | . | . | 1 | 1 | . | 2 | 1 | 8 | 19 | . | . | . | . | . | . | ||||||||
| Dingy Skipper | NI | . | . | 2 | 4 | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||||
| Grizzled Skipper | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | NI | 4 | 3 | 10 | 4 | 2 | 1 | 1 | . | . | . | 6 | 2 | 6 | 1 | . | 1 | . | . | ||||||||
| Large White | NI | . | . | . | . | . | . | . | . | . | 3 | 3 | 2 | 4 | 1 | 1 | 2 | . | . | ||||||||
| Small White | NI | . | . | 5 | 10 | 3 | . | 1 | . | . | 4 | 13 | 10 | 15 | 12 | 15 | 4 | . | 6 | ||||||||
| Green-veined White | NI | . | . | . | 3 | . | . | 3 | . | 1 | 1 | 12 | 18 | 3 | . | 6 | 6 | 2 | 3 | ||||||||
| Orange Tip | NI | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | NI | . | . | 1 | 3 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | NI | . | . | 3 | 2 | 5 | . | . | . | 7 | 4 | 7 | 2 | 2 | . | 4 | 1 | . | 1 | ||||||||
| Brown Argus | NI | . | . | 6 | 28 | 11 | 9 | 1 | . | . | . | 2 | . | 6 | 3 | 2 | 1 | . | . | ||||||||
| Common Blue | 270 | . | . | 9 | 53 | 44 | 25 | 4 | 1 | . | . | . | 20 | 37 | 18 | 8 | 1 | . | 1 | ||||||||
| Chalk-hill Blue | 116 | . | . | . | . | . | . | . | . | . | 13 | 43 | 42 | 16 | 1 | . | . | . | . | ||||||||
| Holly Blue | NI | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Red Admiral | 10 | . | . | 2 | . | . | . | 1 | 1 | . | . | 1 | . | 1 | . | . | . | 1 | . | ||||||||
| Small Tortoiseshell | NI | 1 | . | . | . | . | 1 | 5 | 3 | 4 | 3 | . | 2 | . | 3 | 19 | 13 | 1 | . | ||||||||
| Peacock | NI | 11 | 7 | 3 | . | . | . | . | . | . | 1 | 12 | 11 | 9 | . | . | . | . | . | ||||||||
| Comma | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | ||||||||
| Dark Green Fritillary | 5 | . | . | . | . | . | . | . | 1 | 1 | 1 | . | 1 | . | . | . | . | . | . | ||||||||
| Speckled Wood | NI | 2 | 2 | 3 | 5 | 4 | 3 | 1 | 1 | . | 4 | . | 1 | 3 | 10 | 3 | 1 | 2 | 1 | ||||||||
| Marbled White | 142 | . | . | . | . | . | . | 2 | 6 | 51 | 67 | 10 | . | 1 | . | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 67 | . | . | . | . | . | . | . | . | . | 5 | 19 | 20 | 23 | . | . | . | . | . | ||||||||
| Meadow Brown | 658 | . | . | . | . | . | . | 7 | 11 | 14 | 24 | 79 | 62 | 163 | 94 | 36 | 16 | 5 | 4 | ||||||||
| Small Heath | 231 | . | . | 3 | 6 | 2 | 9 | 23 | 18 | 33 | 34 | 10 | 9 | 2 | 17 | 2 | 4 | . | 1 | ||||||||
| Ringlet | 62 | . | . | . | . | . | . | . | 12 | 21 | 23 | . | . | . | . | . | . | . | . | ||||||||