de Azevedo, C. S., Lima, M. F. F., Cipreste, C. F., Young, R. J., & Rodrigues, M. (2013). Using environmental enrichment to reduce the expression of abnormal behaviours in Greater rheaRhea americanaat Belo Horizonte Zoo: Short Report: Belo Horizonte Zoo: Greater Rhea: Environmental Enrichment & Behavioural Changes. International Zoo Yearbook, 47(1), 163-170. https://doi.org/10.1111/j.1748-1090.2012.00195.x