So I've only got two chickens, but I've got space for about a dozen. Not looking to add pullets at this time, since my hen is a bit aggressive. Thinking about adoptiong some ducks, since I've heard they are a good layers and fun to have around. I have small children though, and want to know how aggressive ducks can be (specifically the Welsh Harlequin breed),and why does everyone say they are so messy? Will they go in the coop at night relatively easily? Also, will a rooster and a Drake compete with each other like two roosters will? Thanks - any input is appreciated!