One hundred years ago, an ornithologist confessed that one, at least, of his beliefs had been shaken. He published a paper about it: “Swallows and Bed-Bugs,” Edward R. Warren, The Condor, 1913, Vol.15(1), pp.14-16. IN MY paper in the May-June CONDOR, 1912, entitled “Some North-central Colorado Bird Notes,” I referred to the belief that swallows […]