I have 3 Swedish girls that are 17 days old. They are happy and seemingly very healthy. Im wondering how much they should weigh. Does anyone have a link to a resource that can tell me average weights and growth stages? They are happy at 75 to 80 degrees, anything more and they pant. They were shedding all sorts of down when they had a bath yesterday. They are even starting to attempt quacking. Is this normal at 2 weeks? Are they over- achievers? Am I feeding them too much?