Some farm stores around here are starting in March and already have fliers out. Tractor Supply is usually a little later, so probably mid-March. If I remember right, the minimum has been 3 ducks and 5 chicks in the past. However, we have purchased less than the requirement. We explained that we had other chicks at home and wanted to add a couple and they were fine with it. If you want to order through them, you have to order in multiples of 5 with a minimum of 25 chicks.