Ducklings in a row

This family of Mallard ducklings are unusual because one of them is bright yellow while the others are the usual mostly brown colour. It makes me think of my own family - the rest of them have dark brown hair while I have ginger hair and blue eyes. I have an idea how the little yellow duckling must feel. It's possible their father had some genes of a different type of duck, I don't know. There are some white ducks which frequent the area. I'll try to go back regularly and see what they're growing up into - although I only have two more weeks of working around here before I start my new job. Apologies for all the back blipping, I've just not been getting around to things lately.