Hiss later testified to the same incident, causing many members to become convinced of the pair's acquaintance. Sings a loud, piercing series of 6–10 high-pitched "tsweet" notes. The following breeding characteristics were investigated in this study: (1) timing of first and second nesting; (2) Its main wintering grounds extend from Honduras to Columbia and Venezuela. [5] The prothonotary warbler is now the only species placed in the genus Protonotaria that was introduced in 1858 by the American naturalist Spencer Baird. document.write("