I have 5 Guinea hens....(2) 3 year olds, (1) 2 year old, and (2) 1 year olds (the 2 and 3 year olds produced lots of eggs last year). So far this spring, none of them have layed any eggs. In the past, my Guineas have all started laying around early to mid March and have quite a production going by this point (I live in SE Iowa and the weather is warm and sunny). I could understand if the 3 year old hens were winding down in their egg production due to age, but none of the others have produced any either. I have 2 males that seem very interested in the girls (not that this would affect egg laying habits, but just a side note). All of the hens get in their nesting boxes and seem like they are going to lay eggs but never do produce anything. They all seem very healthy and happy and have access to oyster shell grit so I don't think it's a health issue. Also, I'm almost positive that they have not layed outside of the coop as I have kept a close eye on them and they don't seem to wander outside of our yard and coop. Maybe they know something I don't....maybe they are planning for the upcoming zombie apocalypse....just joking! But seriously, has anyone had this problem with Guinea fowl before?