I lol'd at your post.<quoted text>
Can you define "kind"?
Is "Bird of Prey" a kind? Or just "bird"? Or "Anything with feathers"?
Is "Primate" a kind? Or "Mammal"? Or "Animal"?
If I present you with an as of yet undiscovered animal, how would you know which "kind" it should be?
How many "kinds" are there?
How do I determine if something like a penguin is "bird kind" or "fish kind"?
What about something like a snail? Is it the same kind as a slug?
Are snakes and false snakes both "snake kind"? Or are false snakes "lizard kind"? Or are they all "reptile kind"? Or are they all "things that lay eggs kind"?
I believe what he means by kind, is others of it's kind, others that are like it. For example if I say idiots and their kind, I mean those specific idiots and all other idiots like him.
If I say snakes and their kind I pretty much mean snakes.
But for his specific term I think he refers to all the species that had adapted like them. So if you have a species that adapts and then makes babies that share that same characteristic then you have him and all his babies, his kind.