First off let me say as a newly registered member as of yesterday, this site is a life saver for those of us who are new to being pigeon parents. I have recently become the proud owner of 13 pigeons and have a few questions for all you pros out there. First question is Is there a problem with having a coop that has a dirt floor instead of cement or wire, health wise for the birds I mean? The coop I have was converted from an old 10' x 14' dog pen that originally had wood flooring that finally just rotted out, so I just decided to leave it open to the ground on the bottom, plus I figured this would help the birds as far as grinding material for their crop. Second question is Do the pigeons actually prefer to make nests on the ground rather than in nesting boxes b/c mine sure seem too? I have an old filing cabinet that I removed the drawers from and laid on its side, the boxes it made are about as big as a standard computer monitor and it had 8 in it, I filled these with pine straw and some dried grass but all my birds that have started laying have removed the straw and grass and started building their nests on the ground in the corners of the coop. Any suggestions on what I should do? Sorry for the long post.