Hawk? Moth

Hawk? Moth

Observation - Hawk? Moth. Description: Found resting in this position in my greenhouse about 10 a.m. and has remained so all day. With my limited knowledge, and using the I.D. books I have it seems to be a bit like a hawkmoth of some kind but the wings seem to be too tightly folded. The unders

Found resting in this position in my greenhouse about 10 a.m. and has remained so all day. With my limited knowledge, and using the I.D. books I have it seems to be a bit like a hawkmoth of some kind but the wings seem to be too tightly folded. The underside is pinkish. Can anyone suggest what it may be please.