“A guy walks into a bar…”  is a typical form of what has been called the “bar joke.”  A chicken version is:
 
“A chicken walks into a bar and clucks at the bartender. The bartender says, ‘No fowl language allowed.’”
 
The joke was posted on Reddit on July 18, 2016.
 
   
reddit
A chicken walks into a bar
submitted July 18, 2016 by belungawhale
and clucks at the bartender. The bartender says, “No fowl language allowed”
 
Twitter
ShaniceMonica
‏@monica_shanice
A chicken walks into a bar and clucks at the bartender. The bartender says, “No fowl language allowed” #ROFL
11:44 PM - 17 Jul 2016
 
Twitter
ChasityKanisha
‏@KanishaChasity
A chicken walks into a bar and clucks at the bartender. The bartender says, “No fowl language allowed” #LMAO
11:56 PM - 17 Jul 2016
 
Twitter
maldonadoushortt
‏@maldonadoushort
A chicken walks into a bar and clucks at the bartender. The bartender says, “No fowl language allowed” #joke
12:42 AM - 18 Jul 2016