- For information on Barn Swallows look at Brown, Charles R. and Mary Bomberger Brown. 1999. Barn Swallow (Hirundo rustica), The
Birds of North America Online (A. Poole, Ed.). Ithaca: Cornell Lab of Ornithology; Retrieved from the Birds of North America Online: http://bna.birds.cornell.edu/bna/species/452 - Also look at these two essays by Mary Willson on their nests and the swallows in general.
