I have 4 Cayuga ducks and 1 Rouan duck. 1 -- 18 month old Male Cayuga (Waddles) based on 3 little curved feathers on tail, makes little or not noise and mounts my chicken hens like there is no tomorrow. The curved tail feathers disappeared this last week. Waddles has nothing to do with the 3 females. He spends the day with his hen friends wondering the yard. 2 - Three ~ 6 month old female Cayuga ducks based on sexing from Ideal hatchery. One of these "hens" mounts the other two daily in the pond. I can tell them apart because I was very new to ducks and just wanted females so Waddles would stop mounting the hens. They spend the day in their 300 gallon pond. So I purchased three crested ducks to match our crested flock of hens. I now know that crested Cayuga was a bad decision and my daughter will not be allowed to breed them. 3 - Rouan duck (Puddles) that is about 3 months old. She/he but I am thinking it a she. Rouan is in the process of moving from nursery land to adult world. Puddles sleeps in the big coop but does not go into the pond. We put Puddles in the pond several times a week but immediate jumps out. She does play in puddles and a small pool/puddle. So now you know my bird situation. Here is my question, I am getting 3 beautiful duck eggs every morning in the duck nesting box. I have been getting eggs for about 2 weeks. It started with 1 black egg. The next day no eggs. The next day a dark grey egg and lighter grey egg. About a week later 2 light grey eggs and an almost white egg. The eggs are almost the same size. The whitish is about 1/4" longer then the 2 light grey eggs. I have been getting 3 eggs every day now. So where is the third egg coming from? Is Waddles a girl? Is the mounting Cayuga really a girl just mounting another girl? Is Puddles laying before she is old enough? Thanks for any help you can provide us!