Yucatan birds - Heard songs and calls from this Great Tailed Grackle which is called X'Cau in Maya at the Zona Arqueologica site Ek'Balam. [Ek' Balam is a Yucatec-Maya archaeological site within the municipality of Temozón, Yucatán, Mexico. It lies in the Northern Maya lowlands, 25 kilometres north of Valladolid... - wiki]