When placing an egg in incubator what end should be up?

You should place the larger end of the egg up in an incubator.

Here's why:

* Air Sac: The larger end of the egg contains the air sac, which provides oxygen to the developing chick. Placing the larger end up allows the chick easier access to the air.

* Embryo Positioning: The embryo naturally settles at the top of the egg during development. This position helps ensure proper blood circulation and development.

Important Note: While it is important to place the larger end up, it's equally important to rotate the eggs regularly. This ensures that the embryo doesn't stick to the shell and allows for proper development.