The ubiquitous Brown-Headed Cowbird (Molothrus ater) has several sounds, here are three in a row. The first is his gurgling, well...gurgle, the second is his high pitched single note, and the third is a flight/alarm call. These were recorded within minutes of each other, then reassembled as one file.
Douglas Von Gausig (recordist; copyright holder), Naturesongs.com
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