Gorilla behavior in response to systematic alternation between zoo enclosures (2003)

Lukas, K. E., Hoff, M. P., Maple, T. L.

Abstract

Gorillas were more likely to increase exhibit use and visibility to zoo visitors during a 4-day novel phase compared to subsequent days in the exhibit. Regularly alternating gorillas between zoo exhibits is a form of environmental enrichment that can increase gorillas' use of exhibit space and increase activity level.