Nothing says 'I love my ducks' more than chipping away at frozen poop every day to keep their pen nice and clean for them. This is the first winter that my fiancé and I will have ducks, and we thought we prepared for everything. We got a heated waterer, heat lamps, a submersible water heater with a protective cage for the outdoor pool, extra layers of bedding, insulation and the overall works for winterization. But I never thought about how difficult and annoying it would be to scrape away at their frozen poop piles. But we do it because we love our duckies. Anyone else have winter woes to share?
I would agree, warmer weather is so much easier! I don't worry about cleaning up the poop. I think my chickens must dig around in the bedding enough to where I don't notice it. I'm not sure what your set up is, but I would put another layer of bedding down, throw/sprinkle some feed on the ground and let them mix all the bedding up. 
