A group of crows is a “murder.” A riddle has been printed on several images:
 
Q: What do you call two crows on a branch?
A: Attempted murder.
 
“What do you call two crows on a branch?  Attempted Murder” was posted on Twitter by Proverbs 31:8-9 on October 15, 2011.
   
“I called the cops about a murder on my front lawn and they just hung up. They said that couldn’t do anything about crows and to stop calling” is a related joke.
     
     
Twitter 
Proverbs 31:8-9
@sargeabernathy
What do you call two crows on a branch?  Attempted Murder.
5:35 PM · Oct 15, 2011·Twitter SMS
   
Twitter
captain
@destroyer95ca
Replying to @WayneBogda
@WayneBogda @philosophy_muse
The philosophy muse heads up
“Attempted murder “
Crows
On a branch
Call a friend
Clue please
1:34 AM · Jun 4, 2013·Twitter for iPhone
   
Twitter
Soma Pullela
@somapullela
What do you call two crows on a branch? Attempted murder. #geekhumor
2:13 PM · Jun 29, 2013·Twitter Web Client
 
6 July 2013, The Independent (London, UK), “So, an infinite number of mathematicians go into a bar” by Andrew Johnson, pg. 13:
12. What do you call two crows on a branch? Attempted murder.
 
Mirror (London, UK)

With the help of a particle ­physicist, chemical biologist and ancient historian, the Sunday People have translated 10 into plain English
By Keir Mudie
21:53, 13 JUL 2013 UPDATED10:53, 23 SEP 2014
(...)
What do you call two crows on a branch? Attempted murder.
A murder is the collective noun for a load of crows. Technically there must be at least three crows to make a murder.
 
Twitter
Kathryn Schulz
@kathrynschulz
What do you call two crows on a branch?
Attempted murder.
(And 49 other very nerdy jokes: http://bit.ly/18DvPTp HT @David_Dobbs)
1:12 PM · Oct 7, 2013·Twitter Web Client
     
Reddit—Jokes
Posted by u/tyzo789 August 23, 2015
What do you call two crows on a branch?
Attempted murder.
       
Storypick
19 Intelligent Jokes That You Need To Read Twice To Understand – Part 2
BY ANANTA SHARMA
28TH DECEMBER 2015
(...)
15. What do you call two crows on a branch? Attempted murder.
Hint: A murder is a collective noun for a group of crows. Technically, a murder is used to refer to three crows.
 
Reddit—Jokes
Posted by u/pancakesorcantcakes February 12, 2016
what do you call two crows on a branch?
attempted murder
 
Reddit—Cleanjokes
Posted by u/chacham2 August 17, 2020
Two crows that tried to start their own flock were arrested. What were they charged with?
Attempted murder.
COMMENTS
Up-The-Irons_2
Was there probable caws?
   
Twitter
CARTEL™
@naija_spy
What do you call two crows on a branch? Attempted murder.
7:04 AM · Jul 18, 2020·Twitter for Android