
| 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 | . | . | . | . | . | . | . | . | . | . | 21 | 26 | 37 | 14 | 14 | 1 | . | . | . | . | . | |||||
| Essex Skipper | 6 | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | 2 | . | . | . | . | . | . | . | |||||
| Large Skipper | NI | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | NI | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | NI | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Clouded Yellow | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 10 | 8 | 8 | 6 | 3 | 9 | 2 | |||||
| Brimstone | NI | 6 | . | . | 4 | 2 | 3 | 5 | 1 | 2 | 3 | . | . | . | 2 | 4 | 4 | 4 | 2 | 3 | 1 | . | |||||
| Large White | NI | . | . | . | . | . | . | . | 2 | 1 | . | 1 | 1 | 2 | 8 | 5 | 1 | 4 | 4 | 1 | . | . | |||||
| Small White | NI | 1 | . | . | . | 3 | 5 | 1 | 4 | 1 | . | 5 | 5 | 16 | 15 | 21 | 23 | 43 | 49 | 25 | 18 | 9 | |||||
| Green-veined White | NI | . | . | . | 3 | 4 | 1 | 1 | . | . | 1 | 2 | 2 | 2 | 1 | . | 1 | . | 1 | 1 | 1 | 1 | |||||
| Orange Tip | NI | . | . | 1 | . | . | 4 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | |||||
| Small Copper | NI | . | . | . | . | . | 1 | . | 2 | . | . | 5 | . | 6 | 4 | 9 | 4 | 3 | 3 | 4 | 4 | 2 | |||||
| Small Blue | NI | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brown Argus | NI | . | . | . | . | . | 1 | 1 | 1 | . | 1 | . | 1 | 1 | 1 | 8 | 9 | 11 | 6 | 2 | 1 | . | |||||
| Common Blue | NI | . | . | . | . | . | . | . | 7 | 5 | 7 | . | . | . | 4 | 8 | 20 | 15 | 19 | 13 | 11 | 11 | |||||
| Chalk-hill Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | 5 | . | 3 | 1 | 3 | . | . | . | . | |||||
| Adonis Blue | NI | . | . | . | . | . | . | . | 10 | . | 1 | . | . | . | . | . | 17 | 16 | 13 | 2 | . | . | |||||
| Red Admiral | NI | . | . | . | . | . | . | . | . | 1 | . | 3 | . | 1 | . | . | . | . | . | 4 | . | . | |||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | 4 | 3 | . | . | . | . | . | 1 | 1 | . | . | . | . | |||||
| Small Tortoiseshell | NI | 7 | 16 | 16 | 7 | 9 | 4 | 1 | . | 4 | 9 | 22 | 17 | 9 | 5 | 30 | 62 | 23 | 20 | 23 | 12 | 1 | |||||
| Peacock | NI | 4 | 8 | 4 | 6 | 6 | 4 | 2 | 1 | . | . | . | . | 4 | 1 | 13 | 5 | . | . | . | . | . | |||||
| Comma | NI | . | 1 | 1 | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | . | . | . | . | 1 | |||||
| Dark Green Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Marsh Fritillary | NI | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | NI | . | . | . | . | . | . | . | 2 | 3 | . | . | . | . | . | . | 2 | 4 | 2 | 1 | 1 | 2 | |||||
| Marbled White | NI | . | . | . | . | . | . | . | . | . | . | 21 | 10 | 8 | 1 | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | 7 | 15 | 30 | 16 | 13 | 15 | 3 | . | . | . | . | |||||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | 1 | 7 | 67 | 66 | 106 | 119 | 89 | 71 | 35 | 13 | 6 | 1 | . | |||||
| Small Heath | NI | . | . | . | . | . | 1 | 1 | 3 | 5 | 7 | 5 | 6 | 5 | . | . | 1 | 23 | 10 | . | . | . | |||||
| Ringlet | NI | . | . | . | . | . | . | . | . | . | . | 15 | 11 | 8 | 1 | . | . | . | . | . | . | . | |||||