Blue bird nusance
Hi, We have had a blue bird house on a back deck for 18 years. We are visited regularly by blue bird moms and dads using our blue bird house for their offspring. 2 weeks ago, the daddy blue bird starting banging on our windows and perching on the screens. From 9 AM to 5 PM, the entire back of the house, flying up to the roof and occasionally to the front of the house. We tried moving the screens to the top half of the window, eliminating the perch, but he is persistent. Any ideas what is going on? Thanks.
Baltimore County Maryland blue bird nuisance
It may simply be that the male bluebird sees himself in the window and mistakes his reflection for another male. They are very territorial while in the nesting mode and this behavior may persist for another week or two. Sometimes birds have injured themselves while attacking their reflection, so it may be appropriate to temporarily place some washable markings on the window panes to deter this behavior.