The Laughing Falcon is an unmistakable singer, producing one of the most memorable sounds of Santa Rosa National Park, Costa Rica. Their calls, which can carry on for up to five minutes at a time, carry for hundreds of meters through the dry forest.
Calls usually begin with some quiet chortling, and then build slowly as repeated singlets or doublets: "gua-co... gua-co... gua-co". (Costa Ricans call the Laughing Falcon "Guaco".) These long bouts of mesmerizing laughter are usually sung as solos. However, pairs of falcons will often sing together to produce laughing duets
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