House Sparrow (Passer domesticus)
Song: A monotonously, rhythmically repeated chirup, at the rate of 1 per second or faster,
given by the male near his chosen nest site when trying to attract a mate.
The female will give a similar vocalization when she has lost her mate (Stokes 1979).
There are four distinct forms of the song. Each male has a repertoire of 2-4 of the 4 types,
and sometimes multiple versions of each type.
However, they usually have one that they prefer and which makes up the greater part of their song output (Lowther 2006).
House Sparrow song, February 12, 2011, Whitnall Park, Milwaukee County, Wisconsin.
Lowther, Peter E. and Calvin L. Cink. 2006. House Sparrow (Passer domesticus), 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/012 doi:10.2173/bna.12
Stokes, Donald W. 1979. A Guide to the Behavior of Common Birds. Little, Brown and Company, Boston.