Not that colour is the strong point of last night's arrival, the Poplar Hawk, whose colouring is overwhelmingly made up of different greys. It does, however, have a startling blotch of pinky-red on each underwing, which the moth may flash as a warning to predators when disturbed and alarmed. I wasn't feeling specially interventionist when I examined the trap this morning, so I left the moth in peace.
Its distinction, which lifts its otherwise humble status as the UK's commonest hawk, lies in the way that it holds its wings, with the under-ones projecting further forward than the topwings. This can give it a slightly sinister bat-like appearance and it is not a moth which appeals to everyone. For that, we need the pretty pink Elephant hawks.