Thank you Bluebird Lover for the reply. I have been watching my bluebirds and hummingbirds a lot – really lots of fun during this off season.
Yes, heavily wooded areas are not the right locale for bluebirds – they like open fields and areas with not much of anything except grass.
Sorry about that hawk which was harming your birds. I have seen some hawks at various times, but they have not harmed my bluebirds yet.. . . . . They like to hang out on a highwire at the very back fence of my property which is quite a distance from my bird boxes.