We have a 3 hole wooden bird house. This morning there were swallows sitting on it and going in and out. I noticed two of the holes had been chewed or pecked open/larger. The bird house is not close enough to a tree, but could a squirrel climbed up the pole?
I was told some birds will make a small hole even larger. I purchased 1 1/4" copper bird hole protectors and screwed them over the holes. I now have seen the swallows sitting on the house but I don't think they entered it.
Is it possible that the swallows chewed the holes larger and now can't fit through the 1 1/4" copper hole? The lable on the copper hole protectors said tree swallows can fit thru a 1 1/4" to 1 1/2" hole.
These swallows are shinny black with white bellies. I love these birds.
Did I mess them up?
Thanks for your help!
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