I think this probably mostly answers the remaining part of the question: http://articles.extension.org/pages/65600/what-happens-to-unfertilized-eggs-in-the-wil

I think this probably mostly answers the remaining part of the question: http://articles.extension.org/pages/65600/what-happens-to-unfertilized-eggs-in-the-wild http://articles.extension.org/pages/65600/what-happens-to-un... But really I posted this hoping some resident of hacker news who grew up on a poultry farm will come along and tell us what's what.