What is "yabbering"

Usage examples of "yabbering".

Thus I saw what I took to be Nepalese boys in the garb of urban American blacks talking to each other in Spanish, four Japanese girls wearing Andean headgear yabbering to each other in Magreb Arabic, Saree-covered Tolchucks conversing in Cantonese, Malay-speaking Rastafarians, Portuguese-giggling Sikhs, English-speaking Hindu Swedes, Urdu-chattering Nigerian Orthodox Rabbis.