if there are only the two of them, with no females to compete for? I read that they'd mate eachother, but is it harmful for them? It doesn't SOUND very good! I'd keep just one drake, but I also read they need ducky company. I wanted a boy because I read they are quieter, and my HOA has restrictions. As long as I don't annoy anyone, I think we'll be fine. The runners look hilarious. I need to convince hubby, but that will be fairly simple....."Look honey, no more buying expensive pet safe slug killer pellets" We have slugs like no place I've ever seen. I hand picked them every night for weeks last summer and lost count after more than 200 a night. The kids were getting paid by the soapy bucket full. They ate all plants and laughed at my control efforts.