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Use of collard green stalks as environmental enrichment for cockatiels ( Nymphicus hollandicus ) kept in captivity
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Behaviour of cockatiels (Nymphicus hollandicus) at two temperatures in captivity
Behaviour of cockatiels (Nymphicus hollandicus) at two temperatures in captivity ; Comportamento de calopsita (Nymphicus hollandicus) sob duas temperaturas em cativeiro