was forced to move kittens feeding station to a tree with a 'hole in the middle'.the inside can not be seen unless you stand very close to the tree. the kittens have been seen roaming the area near the bushy feeding station near by. when they see any one in the area or the other adult cats, they scamper back under the enclosure. because the weather here in the southeast is warm one day and cold another or warmer during the day and cool at night. am having difficulty figuring out when to put the trap out .the female kitten is the only kitten that has not been TNRd.am not sure how much time I have before the kitten goes in heat? am in the middle of ridding out two storage units before the end of December.am working more days than I have off. have in past left the trap out over night in the summer months. any suggestions or info would be appreciated.