How many chickens are alive today?

It's impossible to know the exact number of chickens alive today. There are a few reasons for this:

* Constant change: Chickens are constantly being born and dying, making the number incredibly fluid.

* Global distribution: Chickens are raised all over the world, making it difficult to track their population accurately.

* Data limitations: Many countries don't keep detailed records of their chicken population.

However, we can make some estimates:

* The FAO (Food and Agriculture Organization of the United Nations) estimates that there are about 23 billion chickens in the world. This number is based on various data sources and is constantly updated.

* It's also estimated that about 50 billion chickens are raised and slaughtered each year. This number is likely to be much higher than the number of chickens alive at any given time.

Therefore, the most accurate answer is that there are billions of chickens alive today, but the exact number is unknown.