Guatemalan quetzal 5, 10, 20 and 100 quetzales, with quetzal notes added in 1933. In 1946, the Bank of Guatemala took over the issuance of paper money, with its first issues being overprints on notes of the Central Bank. Except for the introduction of 50 quetzales notes in 1967, the denominations of banknotes were unchanged until and 1 quetzal coins replaced notes at the end of the 1990s. In the top-right corner of the obverse face of each banknote, the value is displayed in Mayan numerals, representing Guatemala's cultural history. The Bank of Guatemala has introduced a polymer banknote of 1 quetzal
Pavonine quetzal similar ecological role as golden-headed quetzals, who occupy the montane forests to the north and west. The pavonine quetzal remains a poorly studied species, meaning that much is unknown about the species in terms of behaviour. A few studies include this quetzal in bird inventories, but rarely go more in depth about the ecology and behaviour of the bird. Like most quetzals, "P. pavoninus" is primarily a frugivore. A study looking at the stomach contents of nine specimens of this bird found that eight birds had solely eaten various fruits, whereas the other one had consumed a mixture of fruits