
| 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 | . | . | . | . | . | 1 | . | 19 | 90 | 19 | 31 | 30 | . | 1 | . | . | . | |||||||||
| Silver-spotted Skipper | 20 | . | . | . | . | . | . | . | . | . | 1 | 6 | 10 | . | 2 | 1 | . | . | |||||||||
| Large Skipper | 30 | . | . | . | . | . | 1 | 3 | 5 | 1 | 19 | . | 1 | . | . | . | . | . | |||||||||
| Dingy Skipper | NI | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | NI | 5 | 11 | 5 | 3 | 3 | . | 1 | 3 | . | . | . | 8 | 5 | 4 | . | . | . | |||||||||
| Large White | NI | . | . | . | . | . | . | . | . | 5 | . | 1 | 2 | 2 | 1 | 1 | . | . | |||||||||
| Small White | NI | . | . | 1 | . | . | 1 | . | . | 6 | 13 | 7 | 47 | 14 | 20 | 25 | 15 | 3 | |||||||||
| Green-veined White | NI | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | 1 | . | . | . | . | |||||||||
| Orange Tip | NI | . | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | NI | . | . | 5 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | 1 | . | 2 | 1 | . | 1 | . | . | |||||||||
| Brown Argus | 19 | . | . | . | . | 4 | 2 | . | . | . | . | 3 | 3 | 4 | 1 | . | . | 1 | |||||||||
| Common Blue | 63 | . | . | . | . | 4 | 4 | 1 | 7 | 2 | . | 1 | 8 | 13 | 5 | 4 | 5 | 2 | |||||||||
| Chalk-hill Blue | 71 | . | . | . | . | . | . | . | . | 4 | 17 | 23 | 18 | 1 | 5 | 3 | . | . | |||||||||
| Red Admiral | 3 | . | . | . | . | . | . | 1 | . | . | . | 1 | 1 | . | . | . | . | . | |||||||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||||
| Small Tortoiseshell | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 1 | 1 | |||||||||
| Peacock | NI | 1 | 2 | 1 | . | . | . | . | . | . | . | . | 3 | . | 1 | 1 | . | . | |||||||||
| Dark Green Fritillary | 4 | . | . | . | . | . | . | 1 | . | . | 2 | . | 1 | . | . | . | . | . | |||||||||
| Speckled Wood | 50 | . | . | . | 2 | 2 | 3 | 6 | 2 | 2 | . | 2 | 6 | 1 | . | 5 | 2 | 7 | |||||||||
| Marbled White | 78 | . | . | . | . | . | . | 5 | . | 56 | 13 | 2 | 1 | 1 | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 88 | . | . | . | . | . | . | . | 1 | 5 | 11 | 25 | 15 | 31 | . | . | . | . | |||||||||
| Meadow Brown | 666 | . | . | . | . | . | 9 | 25 | 52 | 38 | 79 | 111 | 141 | 87 | 60 | 28 | 17 | 1 | |||||||||
| Small Heath | 117 | . | . | 3 | 2 | 6 | 11 | 8 | 43 | 9 | 2 | . | 1 | . | 3 | 3 | 14 | . | |||||||||
| Ringlet | 23 | . | . | . | . | . | . | 6 | 6 | 7 | 3 | 1 | . | . | . | . | . | . | |||||||||