I know chickens for egg laying, that most lay best within the first year to 18 months and then slow down after that. If varies per breed, etc. Hubby and I were talking about getting these boys some babes this weekend and he wanted to know how long in their lifespan do ducks lay eggs? I want to make sure we get duck hens the same age or older than the boys(6 mo) but not so old that we defeat our purpose of getting some eggs out of this deal! Thanks for the help!!