Obvious Leo wrote: They figured it out and spread the word amongst their brethren. If I put my mind to it I could find you literally hundreds of similar examples and I'm quite certain that a proper animal behaviourist could probably list thousands more. That this is common knowledge is not a phrase I particularly like using but in this case there is no better one. This is fucking common knowledge, Hobbes.
You are talking complete bollocks.
Idle and childish specualtion.
I note you have abandoned your confused musings on Transcendent immanent linear. nonlinear causality .
How and why would a duck warn another duck not to go to shooting areas?
First you say that it all happened in a couple of years, then you tell me the zones were designated after WW2. Make up your mind. You are looking silly.
I've given you the only explanation you need. ducks that inhabit shooting areas, die, others get scared off, and end up in the safe areas.
Generations are annual and so the change happens within a short time.
But you prefer that ducks can communicate a complex massage AND want to tell everyone to come to the safe zones.
Worse still you imply that they are doing this intentionally to 'spread the word'. Where is your evidence?