# Phenotypic Diversity Arises from Secondary Signal Loss in the Elaborate Visual Displays of Toucans and Barbets

> Research article (The American Naturalist, 2019) · cited 23× · AI/ML

**Wikidata**: [openalex:W2937743600](https://www.wikidata.org/wiki/openalex:W2937743600)  
**Source**: https://4ort.xyz/entity/phenotypic-diversity-arises-from-secondary-signal-loss-in-the-elaborate-visual-displays-of-toucans-and-barbets