This species is poorly known but, similar to other species in the genus it is expected to be strongly frugivorous, especially eating figs (Ficus), nectar, and insects. It has been found in Venezuela mainly in evergreen forest, near streams and other wetter areas, as well as in forest openings such as yards and orchards (Handley 1987, Ramoni et al. 2012). Elsewhere, the species has been collected in savannas (llanos), gallery forest, and lowland rainforest. This species is associated with caves of many kinds, but mostly smaller ones (Molinari pers. comm.). Little is known about its reproduction or other aspects of its biology.

This species is found in northern Colombia, Guyana, Suriname, and western and southern Venezuela (Simmons 2005). The species likely occurs in adjacent Brazil. Found between 25-2,000 m asl but is mostly associated with mountains or areas of some topographic relief, possible where caves are more common (Ramoni et al. 2012).

Ramoni et al. (2012) recently predicted a potential range of suitable habitat (EOO) exceeding 836,000 km² in northern South America, using maximum entropy niche modeling, environmental covariates and museum records. Still, these authors call to reduce habitat loss and degradation in the margins of this distribution. The species occurs in protected areas, however protection and conservation of caves is equally important. It is also important to consider that indirect evidence suggests that A. amplus may show some tolerance to habitat fragmentation and human activities (Ramoni et al. 2014).