Januszczak, I. S., Bryant, Z., Tapley, B. et al. 2016. Is behavioural enrichment always a success? Comparing food presentation strategies in an insectivorous lizard (Plica plica). Applied Animal Behaviour Science 183, 95-103.
Staggering food availability through a delivery device is a common way of providing behavioural enrichment as it is usually thought to increase the amount of natural behaviour due to the unpredictability of the food source...