domesticated swan geese, Wat Khao Look Chang, 01.01.10
This links will take you to an interesting article published by Cornell Lab of Ornithology. I will quote the author directly:
Whenever I hear about a report of a Greater White-fronted Goose in upstate New York, I always want to hear a few details to assure that the observer (especially a novice observer) did not confuse a domestic goose. (My italics).
The curse of the novice! I guess this encounter is yet another rite of passage in my development as a birder. Yup still wearing my learner plates! I wasted a fair amount of time on these geese which would have been better spent in the forest! You see birding is by no means a cake walk. But it is good to have encountered this issue with domesticated birds because it is inevitable that it was going to intrude at some time.