“How birds-to-be get oxygen inside eggs.” is the latest animation from the science enthusiast Adam Cole aka npr’s Skunk Bear.
Unlike a human fetus, a chicken fetus isn’t connected to its mother’s umbilical cord. It grows sealed inside the egg. So how does it get the oxygen necessary for survival and growth? In Skunk Bear’s beautiful animation we learn about the oxygen supply of a chicken fetus in parallel to our own, up to the moment when we all take our first breath.