I have a flock of 23 older hens (3 - 4 years old).  I also have a flock of 23 younger hens + one rooster.  The younger flock is in a large building with enough room for all 48 chickens.  How do I merge the two flocks with out bloodshed?  There is only the one rooster.  I am not sure this matters, but my older flock used to use the big building.  I built a new "garden coop" so they could weed my garden all winter and spring.  I don't know if they will remember the new building or not.  Any help will be appreciated.  Thanks.
	
		
			
		
		
	
				
			
	