Why are kangaroos native to Australia, and not anywhere else?
G-d must have created them, and then put them there, which is both special creation and special delivery.
Darwin's experiments on the transmission of various forms of life by various means were extensive, though of course, not exhaustive.
Since many forms of life are common between Europe and Britain, one would expect that the sea barriers between them was recent.
A simple look at the sea floor shows great furrowing in the channel, especially in the narrows.
G-d must have created them, and then put them there, which is both special creation and special delivery.
Because they evolved there and they're not too good at swimming.
You're forgetting this minor detail called Noah's Flood. If this truly was a global flood, the kangaroos would have to swim to the Middle East, get on the boat, get off the boat, and swim back to Australia. Unless you think God miraculously re-delivered them to save them the travel time.
You might point out to God that he forget to put the opossum back with the rest of the marsupials a few thousand years ago.
So G-D created the kangas AFTER the flood?