This is a very sexy sound if you're a Virginia Rail in the Springtime. It means "I'm ready, and I'm lookin' for love!" It's generally called the "ti-dick" sound. The double clicks ("ti-dick") are diagnostic of the Virginia Rail. King and Clapper Rails also click, but generally not in "doublets".
Douglas Von Gausig (recordist; copyright holder), Naturesongs.com
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