Reply To: Worried about our extreme heat this week . . Anything more we can do? Home › Forums › Bluebird Chatter › Worried about our extreme heat this week . . Anything more we can do? › Reply To: Worried about our extreme heat this week . . Anything more we can do? July 19, 2016 at 8:18 pm #2698 dogsandbirdsModerator Carol, the entrance hole doesn’t provide much in the way of ventilation. Ventilation is achieved by CROSS ventilation in boxes so keep the wren guard in place. Better to have it than not. Gin Atlanta, GA
