The population size of the Chestnut-bellied Flowerpiercer is unknown, and they are not commonly seen in their habitat (Parker et al. 1996 , Restall at al. 2007). Parker et al. (1996) categorize the relative abundance of most Neotropical species; however, the Chestnut-bellied Flowerpiercer is one of the few species they were unable to categorize at the time. Its center of abundance in the upper montane zone (Parker et al. 1996). No information available on age at first breeding, life span, survivorship, parasitism, or population regulation.