TY - RPRT TI - Delayed maturation, neoteny, and social system differences in two manakins of the genus Chiroxiphia AU - Mercedes S. Foster PY - 2017 DO - 10.1111/j.1558-5646.1987.tb05825.x UR - https://pubs.usgs.gov/publication/5223608 ID - 5223608 ER -