Keeping with the odds of everything being as it is etc, see what you think of this:
Moorhens are basically ducks as they live on water. But they do not have webbed feet, and they fetch food for their young. Their chicks, unlike mallards, would die without help. Now my question is this: How does the moorehen know it has to make a nest, sit to lay eggs, sit on the eggs, change with their partners to keep the eggs warm, build a nest, fetch food for their young etc etc? They are clever enough to do that, yet if they find food, they will go past the chicks, back to the nest where they were, to feed the chicks that follow behind them chirping (funny eh?) How is it they are clever enough to do one thing, build a family, but so dumb as to swim past the very thing they are trying to rear in the first place. I know the answer is going to be insticnt.... but that is not the answer I look for. How does the instinct arrive? From where? They would have to be in simpler forms, otherwise when they were birds or ducks or whatever, they would not survive. It has to work from the get go. So how does this instinct establish itself early on in the primordail development.
How can something develop something it needs, before it needs it, to have it when it then needs it in the future?
And what did it develop it for in the first place? If it was needed, then what did it do before it had it? And if it did not need it, then why develop it?
Please keep it simple!