Sfalcin, Inaê Carolina, and Ângela Denise Hubert Neufeld Vieira. “Observação Preliminar Do ócio De Nymphicus Hollandicus Sob Enriquecimento Ambiental físico Em Cativeiro doméstico / Preliminary Observation of Idleness of Nymphicus Hollandicus under Physical Environmental Enrichment in Domestic Captivity”. Brazilian Journal of Development 7, no. 5 (June 7, 2021): 51654–51663. Accessed April 29, 2024. https://ojs.brazilianjournals.com.br/ojs/index.php/BRJD/article/view/30274.