Never had a double or triple yolker (ever, either from bought eggs or from our own) but they're massive! I have a supermarket Jumbo egg box and it won't close with 6 of the largest eggs in it. I'm getting 2, sometimes 3 per day of these monster eggs so there must be more than one hen laying them.
Is it possible for a hen to lay more than 1 egg per day? If so, I often get 2 very similar in size, shape and colour so these may be from the same hen... I intend to buy some leg rings and then spend a day watching who lays what so I can decide which girls to put in mith Dave my biggest boy... Exciting!