Are Chimpanzees Cultural? This video offers an introduction to the history of the issue. The blurb for it reads:
Does culture separate humans from the animal kingdom? Are any other animals cultural? Primatologists have been able to answer these perplexing questions by studying our closest living relatives: chimpanzees.
I found this video via a post by R.E.W. Berl in the CultEvol blog - thanks!
Apparently it was produced by a bunch called The Advanced Apes. Their blog is an unusual one - evolutionary theory mixed up with transhumanism, machine intelligence, the global brain, extraterestrials and cyborgs. They have a Youtube Channel. Some of this material is interesting.