We bought 3 female khaki Campbell ducks 3 weeks ago and at first they were laying every second day but for the last week-nothing! They are in a large enclosure and we have searched all over it in case they found a sneaky hiding spot but no sign :-/ .We haven't changed anything that would stress them ,fed twice a day and they get lots of fresh veg also . They have a pond and also a little house (which they rarely go into even when weather is very bad ).Can't figure out what's happened any tips advice etc very much appreciated