My Buff Orpington hens went broody three times last summer - in May and again in June. When they tried in July, we said no and took the eggs. But I'm not sure which of the hens were the broody ones, and when they'll do it again. Do they naturally wait until the weather warms up a little? (We live in Kentucky, so the nighttime temps are still dropping to the 30's and 40's some nights.) And how many times will the same hen go broody in a year? Thanks!