This pictured is taken during a visit in one of my BH project. I saw this 2 bird are having sex in the bird house. I hope to share this pictured to you.
From this pictured also, you can saw that the nest in this bird house is cracking due to the humidity drop. After i verify it, the humidity is only min 55 % and Max is 65% only.
What i am want to share is, the humidity will not effect the qty of the bird stay in a BH but the quality of the nest only. !!! This bird house already have more then 90 nest.