My advice is just take a deep breath and relax if getting it done via vaginal ultrasound. Sorry if this TMI for any of you, but imagine the vaginal wand as if it were like your significant other putting himself in you.
The runner duck, the Cayuga, the blue Swedish and the buff duck are among the top layer ducks, averaging up to 180 eggs per year. Poor egg layers such as the mallard may lay as few as 60 eggs a year. Some specialized varieties such as the white layer duck can produce nearly 300 eggs a year.
Others are button quail african quail and bobwhite quail which are also good layers..they lays btn one and two eggs a day. On average each quail can lay 300 eggs per year meaning each quail wouldn't lay egg on each day. However, wild quails of which some farmers are supplied by comen will rarely lay eggs.