This BBC video is called How to Speak Chimpanzee.
From Wildlife Extra:
Chimps found to be adapting to human neighbours
Wild chimpanzees could be learning to coexist with their human neighbours a new study suggests. Expanding land use for agriculture and other activities are increasingly encroaching on wild chimpanzee habitat and there are signs the chimps are adjusting to these habitat changes.
Researchers from Muséum national d’histoire naturelle have used camera-traps to observe chimpanzee behaviour during incursions out of the forest into maize fields in Kibale National Park, Uganda. During the 20 days of the study, a total of 14 crop-raiding events were recorded by the activation of the video-trap.
The researchers observed large parties of eight chimpanzees which also included vulnerable individuals such as females with clinging infants. This is the first record of frequent and repeated activities at night, in the darkness. Habitat destruction may have prompted the chimpanzees to adjust their normal behaviour to include innovative behaviours exploiting open croplands at night.
The study concluded: ”Even though the chimpanzees’ home range has been seriously damaged and disturbed by both logging activities and significant human demographic pressure, chimpanzees have shown great behavioural flexibility including unexpected nocturnal behaviour, in order to take advantage of the proximity of domestic nutritive food.
“The new findings of chimpanzee nocturnal raids can aid to formulate recommendations to local farmers and Park authorities in addition to those already listed as “best practice guidelines” from IUCN in terms of human-wildlife conflicts.”