A common species in Scotland but rare in the Outer Hebrides. There are just two 2016 records from Lewis. On the wing from May to early August where the larval food-plant, birches (Betula spp.), grow.

References: 
Leverton, R. & Cubitt, M. (2024). The Larger Moths of Scotland.
Waring, P. & Townsend, M. (2018 third edition). Field Guide to the Moths of Great Britain and Ireland.