The plural form of chachalaca; multiple birds of this species.
From the singular 'chachalaca' with the standard English plural suffix '-s,' which became the standard way to pluralize nouns beginning in Middle English.
When Europeans learned about New World animals, they borrowed the indigenous names directly—like 'chachalaca' from Spanish, 'jaguar' from Tupi, and 'condor' from Quechua.
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