A kangaroo named Chuck thought to be a male, at the Barnaul Zoo in Siberia has surprised everyone by giving birth. The kangaroo birth process is shrouded in mystery still so zoo officials didn’t know Chuck was pregnant or exactly when she gave birth, in fact, they only noticed Chuck had a baby once the “joey” poked its head out of Chuck’s pouch.

Baby kangaroos are called a joey and Zoo director Sergey Pisarev said they probably need to rename Chuck. The last refugee habitat the zoo obtained Chuck from labeled Chuck as a male and so Barnaul Zoo accepted the kangaroo as a male.

The joey was about the size of a cherry when it was born and staff members at the zoo say the joey was born a little while ago based on its current size.

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