The five Tree Swallow nestlings fledged on June 14. A House Sparrow was harassing the remaining Tree Swallow father and mother in an increasingly disturbing manner. I took the nesting box down, thinking that the House Sparrow wanted the nesting box and was going to continue to intimidate the Tree Swallows. House Sparrows are known to kill nestlings, and so I was concerned about the fledglings. The House Sparrow hung around for awhile and then was gone. This morning I removed the nest from the nesting box so that I could clean the box and noticed the beautiful spiral pattern on the bottom of nest.
The Tree Swallow father and mother have been returning to sit on the hummingbird feeder ever since I took the nesting box down.
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