Why does a chicken sits on her eggs?

Here's a breakdown:

* Temperature: Chickens need a specific temperature range (around 100 degrees Fahrenheit) for their eggs to develop properly. The hen's body heat provides this constant warmth.

* Development: The warmth triggers the embryos inside the eggs to grow and develop.

* Hatching: After about 21 days, the chick inside the egg will be fully developed and ready to hatch. The hen's warmth ensures this happens at the right time.

So, while it might look like she's just sitting around, a hen is actually hard at work ensuring her chicks have a healthy start to life!