KROODSMA, D. et al. (2013) – Zootier Lexikon https://www.zootier-lexikon.org/bibliographie/k-1699975706/kroodsma-d-hamilton-d-sa-nchez-j-e-byers-b-e-fandino-marin-o-h-stemple-d-w-trainer-j-m-powell-g-v-n-2013
repertoire of both the Monteverde and Talamanca dialects; (4) immature bellbirds have