So I was surprised with 6 ducklings 2 khaki campbells and 4 pekin and I am at a loss as to how old they are tractor supply said the pekin are a week or 2 old but when I google pics of week old pekin ducklings they all look so much bigger than mine the khakis came from someone else and are about a week old any help? They are temporarily in a dog crate in the kitchen while hubby is building them a better home in the barn