A large migratory species, well represented in the Outer Hebrides. There are two main flight period with peaks in May and October but can be found in any month in between. The larvae from the first generation feed on herbaceous plants.

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.