Interesting. So, I'm wondering... If you had seen a duck, what would you have done then? Looked for god no. 4 somewhere? I mean, how would you know which god showed it to you?
Nope, I would have accepted it as some sort of a sign. The depth of beleif would have varied with the situation.
A Glowing 40ft plastic duck appearing in the sky 100%
A plastic duck dropping immediatly on my head 99%
A Plastic duck being on the work desktop when i returned to it a few mins later 90%
A Plastic Duck being in my bathroom and bought spontaneously by the missus for no reason 66%
A Picture of a plastic duck on my TV within a hour 50%
Ditto but within 2 days 30%
A plastic duck in a shop window or shelf 10%
No Plastic duck at all 0%
Which God would it have represented? Umm the creator of the world. Had I been able to communicate directly, i would ask, "hey so are you anything to do with Jesus-God, Allah or The Emperor Hirohito?"
I suspect it would reply , nope, thats just some wannabe figments created by lonely men.