“Why did the vulture cross the road?”/“Because the chicken didn’t make it.”

“Why did the chicken cross the road?”/“To get to the other side” is a classic riddle from the 19th century. A vulture version has been cited in print since at least 1999:
   
Q: Why did the vulture cross the road?
A: For a fowl reason.
   
Another vulture version was posted on Twitter by Kurt Podeszwa on November 27, 2011:

Q: Why did the vulture cross the road?
A: Because the chicken didn’t make it.
   
   
Google Books
The Silly Little Book of Animal Jokes
By Kindersley Dorling
Bath, UK: Mustard
1999  
Pg. ?:
Why did the vulture cross the road?
For a fowl reason.
   
Google Books
Super-Duper Good Clean Jokes for Kids
By Bob Phillips
Eugene, OR: Harvest House Publishers
2000
Pg. 79:
Why did the vulture cross the road?
For a fowl reason.
       
Michigan-Sportsman.com
Why the Chicken Crossed the Road
Discussion in ‘Comedy’ started by twodogsphil, Feb 24, 2004.
(...)
Q: Why did the vulture cross the road?
A: The chicken was hit by a car.
 
Google Books
The Everything Kids’ Gross Jokes Book:
Side-splitting Jokes That Make Your Skin Crawl!
By Aileen Weintraub
Avon, MA: Adams Media
2005
Pg. ?:
Why did the vulture cross the road?
He had fowl reasons.
   
Google Books
Jumbo Jokes And Riddles Book:
Hours of Gut-busting Fun!
By Beth L Blair
Avon, MA: Adams Media
2007
Pg. ?:
Why did the vulture cross the road?
He had fowl reasons.
 
Twitter
Kurt Podeszwa
@KurtPodeszwa
Why did the vulture cross the road?
Because the chicken didn’t make it!
#birdsof prey @texrenfest
5:55 PM - 27 Nov 2011
   
Twitter
NanoJuice
@NanoJuice
Joke of the day, courtesy of Evan… Q: Why did the vulture cross the road? A: ‘Cause the chicken didn’t make it. #LOL
9:00 PM - 8 Mar 2012
   
Twitter
Magoou
@magoou4
#SmileTime: Why did the Vulture cross the road?... Cause the Chicken didn’t make it… #BangBang
1:09 AM - 13 Mar 2012
   
Reddit—Jokes
Posted by u/IT-Ronin February 14, 2016
Why did the vulture cross the road?
To eat the dead chicken on the other side.
     
Twitter
Chris Merle
@clmerle
Replying to @SamSykesSwears
Here’s a new one I heard recently: Why did the vulture cross the road?
The chicken didn’t make it.
3:20 PM - 3 May 2017
 
Reddit—Jokes
Posted by u/wildembers June 24, 2019
Why did the vulture cross the road?
Because the chicken didn’t make it.