Dominant yellow-rumped cacique (Cacicus cela) males mate with many females while males lower down in the hierarchy mate with only a few females, if any. Dominant males can consort with anywhere form 1-27 females and will guard them while they forage and nest.

[Photo by Grace Davis in Barro Colorado Island, Panama; Caption by Maggie Creamer]

Reference

Corwin, P. (2012). Yellow-rumped Cacique (Cacicus cela). In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/nb.yercac1.01