Turdus grayi (clay-colored thrush)
The Clay-colored Robin (Turdus grayi) is the national bird of Costa Rica, and one of the most widespread . I don't think there was any major area without this bird. The local name is "Yigüirro" and the song signals the beginning of the rainy (and therefore, the planting) season.
Douglas Von Gausig (recordist; copyright holder), Naturesongs.com

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