I have two female ducks and one male duck (and a new duckling!), and the females are always panting lately (I've never seen the drake do it). It's hot where I live all year long, but I always have drinking and swimming water on hand for them, and they are from this climate to begin with. Should I be worried about this? Both of the girls have been laying an egg a day for a couple of months now, so I'm worried they might be overtaxed.