I lost my female duck just recently now my two boys have been depressed and still calling for her, it's sooooo sad. I found someone who has two mallard female ducks that he wants to sell. I was going to pick them up this evening is there anything special I need to know. I know with chickens when you get new ones your suppose to keep them separate for at least a month. Does this rule of thumb apply to ducks as well or is there a new rule of thumb for them.