I've noticed many websites and at least one ebook that discuss runner ducks state that "stone carvings in Java suggest these ducks have been domesticated at least 2,000 years." (to quote the OR zoo website). I cannot seem to find any scholarly affirmation of this claim, or any photographs of ancient Indonesian art depicting runner ducks. Can anyone help me verify or disprove this claim? I would love it to be true and I would really love to see the art, but at this point I'm wondering if this is an impressive-sounding fact that has been passed along by many, without proper verification. Does anyone here know? Thanks!