Amazonian
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Ancient feathers show a managed trans-Andean parrot trade Pre-Inca Amazonian parrot feather trade reconstructed using ancient DNA, isotope analysis, and spatial modeling reveals sophisticated trans-Andean exchange networks operated by the Ychsma culture.
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Amazonian caimans differ in body-temperature regulation Study of three Amazonian caiman species reveals distinct thermoregulation strategies correlated with habitat and size, including vascular heat storage mechanisms.

