I have 21 guineas 12 males 9 females. A oppsum keeps eating my eggs out of all but one nest and that one nest is being sat on. If i clip their wings thhey will have the front yard, which is good size for all of them, plus some parts of the yard are over a foot tall, they would have acess to the hen house. the fence is probly 5ft high. Then if i keep them pinned they will have no grass no durt to dust bath, 2 pins are on the ground out of 3, and they will be cramed up. I had them free rangng but now i need there eggs. What would be better for them pinned up, or cliped?