Following is a transcript of the video. Imagine giving birth to a 24 pound baby. That’s 3 times the size of the average human newborn. Ouch! But for kiwi birds, giant chicks are the norm.

"I just texted my boss so fast to let him know, like, if I'm late, just know that I'm witnessing someone give birth on the train."The video shows bystanders holding the baby after the woman gave ...