Adaptation and manual selection in action

[npetreley]

After having been selected as food for generations, chickens are adapting and evolving into the final state for which they are selected, as is demonstrated by this series of transitional species:

 

[Jerry Smith]

It is believed that a separate species has also diverged in the last 20 years, the Boneless Chicken:

 

[crusafontia]

Of course, the chicken's lifestyle obviates the need for a brain. Note this early headless variety.