It has been a miserable wet day. I think the sparrowhawk was feeling a bit sorry for himself and he didn't seem to have his usual enthusiasm. Of course he may have already had his breakfast and just wasn't feeling hungry.
I didn't see him catch anything or even try to, although he was keeping an eye on things.
He sat for some time with his tail out like this, trying to dry the feathers.
I suppose he flies less well when he is wet and that would reduce his hunting efficiency. I read that sparrowhawk prey deliveries in the nesting season are significantly reduced in rain. I know that owls struggle to hunt in rain because their soft silent feathers easily get waterlogged.