Never.
arable means refined .. an antonym will be unfertile
When there has been no contact with a rooster for at least 10 days.
Not being able to get pregnant is what being unfertile, or infertile means - so no. However, nature can be a bit tricky, and apart from a couple of medical conditions it's quite hard to say when the chance of pregnancy has disappeared entirely.
That's commonly called either sterilization, or a vasectomy.
yes they can, if there is no male, or if perches are not stabile, than mating can be unsuccessful
whenever you want, make sure its unfertile though
Probably not his fertility does not depend on the penis but on the equipment in his testicles.
She was a girl who I dont know of but I do know she is a girl.
this is simple get to know this girl
in some cases it doesnt matter. becaoming unfertile does not matter how many children you have.
Hard dry unfertile soil and usally woth rocks in them, and in wonter muddy land.