
| 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 | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 8 | 18 | 12 | . | . | ||||||||
| Large Skipper | 2 | . | . | . | . | . | . | . | 1 | 6 | 5 | 3 | . | . | . | 1 | . | . | . | ||||||||
| Dingy Skipper | 74 | . | . | . | 8 | 1 | 23 | 25 | 11 | 1 | . | . | . | . | . | . | . | . | . | ||||||||
| Grizzled Skipper | 23 | . | . | . | 5 | 2 | 6 | 6 | 5 | 1 | . | . | . | . | . | . | . | . | . | ||||||||
| Clouded Yellow | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 5 | ||||||||
| Brimstone | NI | . | 1 | 4 | 3 | . | . | . | . | . | . | . | . | . | . | 4 | 3 | 3 | . | ||||||||
| Large White | 44 | . | . | 4 | . | . | . | . | . | . | . | . | . | . | 4 | 4 | 3 | 11 | 8 | ||||||||
| Small White | 185 | . | . | . | . | . | . | 1 | 1 | 1 | . | 1 | 2 | . | 20 | 19 | 21 | 16 | 28 | ||||||||
| Green-veined White | 30 | . | . | . | 1 | 1 | 1 | 2 | . | . | . | . | . | . | . | 8 | 2 | 4 | 5 | ||||||||
| Orange Tip | NI | . | . | 2 | 5 | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | NI | . | 1 | . | 1 | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | 32 | . | . | . | . | 2 | . | 2 | . | . | . | . | . | . | 1 | . | 5 | 7 | 4 | ||||||||
| Small Blue | 4 | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brown Argus | 78 | . | . | . | . | . | 1 | 6 | 8 | 2 | 2 | . | . | . | . | 1 | 8 | 22 | 7 | ||||||||
| Common Blue | 496 | . | . | 1 | . | . | 1 | 29 | 25 | 35 | 15 | 2 | 1 | . | . | 1 | 15 | 22 | 79 | ||||||||
| Chalk-hill Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 4 | 11 | ||||||||
| Adonis Blue | 42 | . | . | . | . | . | . | 2 | 12 | 11 | . | 1 | . | . | . | . | . | 1 | 2 | ||||||||
| Holly Blue | 4 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | ||||||||
| Red Admiral | 9 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | 2 | . | . | ||||||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | 6 | ||||||||
| Small Tortoiseshell | NI | 15 | 42 | 32 | 26 | 1 | . | 1 | . | . | 5 | 16 | 6 | 13 | 9 | 10 | 1 | . | 5 | ||||||||
| Peacock | 17 | 2 | 4 | 1 | . | 1 | 1 | 2 | . | . | . | . | . | 1 | . | 2 | . | . | 1 | ||||||||
| Comma | NI | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | . | . | . | ||||||||
| Dark Green Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | ||||||||
| Silver-washed Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | ||||||||
| Marsh Fritillary | 245 | . | . | . | . | . | 48 | 87 | 47 | 11 | 1 | . | . | . | . | . | . | . | . | ||||||||
| Speckled Wood | NI | . | . | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | ||||||||
| Marbled White | 588 | . | . | . | . | . | . | . | . | 1 | 20 | 46 | 111 | 71 | 113 | 43 | 7 | 1 | . | ||||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 18 | 18 | 26 | 9 | 8 | ||||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | 22 | 66 | 59 | 53 | 110 | 165 | 333 | 640 | 942 | 644 | ||||||||
| Small Heath | 160 | . | . | . | . | . | 4 | 8 | 23 | 47 | . | 36 | . | 9 | 8 | 3 | 3 | 11 | 19 | ||||||||
| Ringlet | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | ||||||||