Wrentit
Chapter 2: Birds and Their Sounds
Subchapter: Female song and duets
From page 18 in the book.
Photo by Brian E. Small
♫51. Five quick pit-pit-pit-pit tr-r-r-r-r-r-r-r-r-r-r-r-r-r-r songs from a singing male, solo, with no female to be heard (nice Anna's hummingbird in the background, e.g., 0:13-0:18). March 9, 2017. Montaña de Oro State Park, Los Osos, California. (0:28)
♫52. Four solo songs from a second male, delivered at a more leisurely pace. Note how this male's songs are distinctly different from those in ♫51. March 9, 2017. Montaña de Oro State Park, Los Osos, California. (0:39)
♫53. Duetting male and female. Her seven-second pit pit pit song (always without the rapid terminal tr-r-r-r-r-r-r-r-r-r-r-r-r-r-r) overlaps the first two male songs; in a second example, her song is more distant, and is given between the two male songs (0:38 to 0:42). March 12, 2017. Montaña de Oro State Park, Los Osos, California. (0:51) Recorded by Janet Grenzke.