We have 2 distinct sub- flocks within our flock, one of them is a drake & 2 hens that NEVER leave each others sides...until today. One of the hens was gone all day. The other hen and drake just hanging near their pen (we free range on 10 acres during the day). I took the dog and looked and looked (even checked neighbors yards and sides of the nearby roads/ditches even). Was beside myself (and a little ticked that it had to be the Rouen that was missing...couldn't be the nice bright white pekin!) Finally, gave up. Went out at dusk to let everyone in and she's swimming around in the pond with the other two. Do you think she's building a nest or something? Is it worth following her tomorrow morning to see (if she goes again) and any ideas on how to do this and not scare her? If she does have a nest what are the chances I could move it into the pen and she would sit on it? TIA