I have 5 call ducks... 2 boys and 3 girls..(not including 4 call ducklings unrelated and not sure of the sex).. I also have 4 adult laying hens...and 9 young hens..They all share a huge pen and coop... the pen is approx. 21 feet wide by about 85 ft long... The coop is an old horse shed that was enclosed for the chickens.... Well, the ducks have been making a nest in one corner... they dug a hole and each take turns sitting and laying an egg.. so far I have gotten 5 eggs. (2 are in the fridge because my mother in law didnt realize they were duck eggs... LOL) the other 3 are in an incubator with a bunch of chicken eggs. My questions are... do call ducks bury there eggs? the 2 from today were kinda buried....If I leave them in the nest, will one of the ducks set them? Or, if I incubate them, will they be ok if there a week or so younger than the chicken eggs in there? I add them to the incubator as I find them.. Also.. all the eggs are light greenish/blue.. except one.. its very dark green and a bit longer than the rest... is that normal? Im gonna get pics of my ducks so you all can see how cute they are..... Thanks.