Once again this year, I had some fighting between Bluebirds and Tree Swallows. I have two bluebird boxes and again I ended up with a Bluebird nest in one and Tree Swallows in the other but it took several days for them to sort it out.

Yesterday, I had some disturbance going on at the Tree Swallow nest box when some other Swallows invaded and fighting began. I think the invaders were likely female tree swallows . The original owners of the nest prevailed and today it was all quiet and I saw the male with his head protruding out of the box most of the day guarding the box. Tree Swallows are beautiful birds, especially the male, and they are big time insect eaters on the fly.

Another threat to Tree Swallows is the House Sparrow. Is it OK to kill a House Sparrow? Well, the guy in this video loves his Tree Swallows and he guards them using lethal force with his air rifle.

https://tw.forumosa.com/t/defending-...wallows/171318