“Would it be possible for you to tell us the ideal date and time for birds to arrive at their destinations? And has this always been the time and date on Earth or has it varied perhaps just a tiny bit here and there?”
The purveyors of the global warming insanity love their anecdotes about melting glaciers, polar bears in distress, and migratory birds who are supposedly late. On the other hand, temperatures haven’t risen since 1998, there is an alternative sunspot-cosmic-ray based theory that has been successfully lab-tested, and the physics of the greenhouse gas theory has been refuted by geophysicists. Not to worry; the global warming crowd has the votes, and in a political-religious dispute votes count more than facts.
Do tell.
He can do whatever he thinks he needs to do. His level of commitment to his ideas doesn't change the intellectual quality of his ideas.
You provided three separate points in the post to which I responded. The first is the stuff of much debate and depends significantly on how the data is interpreted. The second has yet to demonstrate a real-world effect. The third, which is this supposed disproof, is not scientifically credible.
I'm probably guilty of this too, but: not everything that can be found which apparently supports a particular position is of the same quality. When discussing a subject like this, the lesser-quality stuff needs to be filtered out. And lesser-quality stuff exists on both sides.