I first encountered this beautiful little bird nesting in the mid-1970s along the northern boundary of Lake Shelby, in abandoned woodpecker cavities.
I was so excited that Tree Swallows were expanding their nesting range southward to include Shelby County and Kentucky.
Then, one spring, I found an unknowing park’s employee chain-sawing down these woodpecker cavities. Whether it was tree branches or tree trunks didn’t seem to matter.
I guess this was being done because they were partially void of sap.