Howell, S. M., Fritz, J., Silvers, A. 1998. Party Popper tubes: An effective enrichment for adult captive chimpanzees. The Newsletter 10(1-2), 3.
The device consists of food treats ... mixed with shredded paper and stuffed into a 4 foot long section of cardboard tube which is cut into 4-inch lengths.
Year
1998
Animal Type
Topic