I have Mynahs and Starlings nesting in the roof space.
Colo(u)rbond roof on the upper storey.
I am too old to be crawling over roofs.
Background for those able to help:
About 10 years ago we moved into the house. Noticed birds getting in above the guttering. Got an expert out. “No, there’s no way birds can get in there”
Had an expert come out five years ago. Made a half-baked effort to stuff some chicken wire at a few spots around the roofline. The birds found other spots to get in.
Thanks in advance for your help one_putt(at)telstra(dot)com