What is the size of a newborn baby kangaroo at birth?

They are so tiny, the mother licks a trail up to her pouch for the tiny joey to crawl up following the smell but it has to find one of 4 teats, which it can hardly fit in it's tiny mouth and it stays latched on for 2 months until it develops fur and grows. If it doesn't make it to the pouch, it does not survive.

Kiwozzie, What a precarious way to begin. Only the strong would survive the trip to the pouch.