Mourning Dove (Zenaida macroura)
Long Coo: Usually 5 (sometimes up to 7) low coo notes, the emphasis on the second note which is higher in pitch. This is the "song" of the Mourning Dove and is used by the male to attact a mate and claim a territory. There are several distinctive displays that sometimes accompany this vocalization. In the Perch-Coo the male assumes an erect posture and puffs out his throat. In the Bow-Coo the male bows before females or competing males immediately preceding the Long-Coo (Stokes et al. 1983).
Mourning Dove Long Coo, February 28, 2010. Lulu Lake State Natural Area, Walworth County, Wisconsin.
Stokes, Donald W., and Lillian Q. Stokes. 1983. A Guide to Bird Behavior Volume II. Little, Brown and Company. Boston and Toronto.