I'm still wondering if those whose ducks are just fine in very cold weather might let us know what breeds or weights they are talking about.
I suspect that some of the smaller breeds (runners, calls), just may not have as much body mass to insulate them as, say, Pekins, Rouens, etc. I also suspect that six small ducks cannot keep themselves as warm by bunching up as twenty Pekins.
2 degrees F this morning, our duckies coldest day yet, and my six Khaki Campbell were unhappy but came out to enjoy the sunshine and eat and drink. They patiently waited while I tossed and cleaned their litter and went back in.
We chose the Khaki Campbell - a breed begun in the late 1800's from an Indian Runner and a Rouen, then later bred to a Mallard - because they are known to be good in both below freezing, which happens occasionally here, and humid weather...which happens often. They are also bred to be good egg layers.
They are very gently, cannot fly more than about four feet high or far, no wings clipped, and despite the books saying one male to several females, our three pair all get along well. Possibly this will change when they get older. They were born April 15, 2010 so are nine months old and went from our basement in May at night, to a permanent outdoor yard and free standing shed as pictured above in my other posts. They have progressed from hiding from the snow to playing in it like it is their pond in the teens.
I put up a
YouTube video