My opinion is this...in the wild they will breed whenever they are ready. They dont sit there and eat and eat, climb onto a scale and refuse a male suitor if they're not making weight. Prey is hard enough to come by, who's to say that a 900 gm female or a 1100gm female will refuse breeding in the wild? At the end of the day we captively breed WILD animals, who have their own WILD instincts and they themselves know better than you or I when they are ready to take.