[Topspinmo]

For those of us that have honor of hosting bluebirds? Bluebirds checking out my nesting box today. If haven’t already? time to clean out that nesting box and prepare for your birdie friends to start looking at nesting sites. If you did clean it out last summer I would check it again make sure wasps or mud dabblers have taken over or any other invader?

If they nested successfully they usually come back to same location. Boxes should be cleaned out after every nesting to remove nesting material to prevent parasites, they will build another nest over the old one.

Reference:
Bluebirds do not remove old nesting material, rather they simply build over an existing nest. If you do not clean out your nest box, it may become filled to the brim with old nesting material. This can potentially leave the new nest dangerously close to the entrance hole, where predators can easily reach it.Aug