Quetzal is from the Nahuatl quetzalli (precious feather, sacred bird). Quetzal refers to the Resplendent Quetzal (Pharomachrus mocinno) — sacred bird of pre-Columbian Mesoamerica. The resplendent quetzal is Guatemala's national bird, and the quetzal has been Guatemala's currency since 1925.
Quetzal does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
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In Pythagorean numerology the letters of Quetzal reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.