I have a Mallard duck in with my laying hens, they've been together since they were chicks. About 3 months ago,mid-May, she(the duck) started laying, and has laid an egg EVERY day since!! More than my best laying hen! I thought that ducks laid seasonally and only a clutch at a time. Is this normal, or has living with chickens and eating Layer feed(Mana-Pro-Egg Layer 15%) all her life done this?