This question I am asking you is precisely the evidence you are saying is inconclusive. This particular question is probably the one that led Darwin to propound his theory in the first place.no not cynical or even critical, just wishing for the evidence to support the theory to be more conclusive than it is currently.
What I was seeking was an explanation, one which gives a plausible sequence of events by which one fact (A) unknown birds living on the mainland leads to a second fact (B) 12 particular species are found no where but on Galapagos. By plausible I mean one that relies on nothing more than the data given plus the facts I added that I assumed you already knew (migration is seasonal, migratory birds will instinctively return to their breeding ground, entire species will not migrate at once, 12 entire species will not insert themselves into a new habitat.)no not really I Just simply answered your question: How did the finches come to exist on the islands?
That's not in the data set. I was asking you to apply just the data given, along with your common sense and reason. This extra information may have thrown you off track.My answer was also simple: due to the time limitations 9 - 90 million years
But then I gave you the fact that these species are not migratory, nor do they emigrate.they must have migrated [ emigrated ]
Can you explain how (A) led to (B)?