Your flock is beautiful too! The black runner ducks look so striking, I love them! I'd love to say I'll have to keep my eye out for one, but I'm not sure how much convincing my partner would need haha.
And yess, got my new runner today from a backyard breeder who was keeping them in an allotment. When I got her home, I inspected her more closely, and to be honest the poor thing was filthy

. She had mud on her under-side and face, and had red eyes. I can only assume it is because she didn't have deep enough water to clean herself? felt really bad for her. Also, she is a lot shorter then my other two runners, her neck isn't as long and her wings look rather large. She is apparently 12 weeks old.
On a positive note, when we brought her to my back yard, her quacking was making my other ducks call out to her before they were even let out of their coop! When they were all out in the open, they seemed to chatter for a minute, then dash off to the kiddie pool I have up for them at the bottom of the garden. The two runners I had before, with the new runner seemed a lot, lot more confident, as they never dared to go down the garden before. I have read that you are supposed to keep new poultry separated, but when she followed my other two into the coop at bed time, I couldn't bring myself to separate her. I know she used to live with a lot of other runners, so I didn't want to put her on her own. I'm just praying that she doesn't have anything that she could spread to my other runners.