Katie Slocombe checks out chimp languages (paywall):
Katie Slocombe of the University of York, UK, and her team recorded vocalisations by a group of adult chimps from the Netherlands before and after their relocation to Edinburgh Zoo. Three years after the move, the Dutch chimps had picked up the pronunciation of their Scottish hosts.
So how hard can it be for you?
(NewScientist, 16 Feb 2015)