I thought I'd put this in Hen House not Chicken Chat because it will be useful for anyone who needs to do it.....
On Thursday night, I thought that Mary looked like she might have sour crop (from the description on here) - her crop was huge and floppy with water sounds swishing around inside it. I checked her breath, but it didn't smell.
anyway, yesterday at work, I checked how to deal with it.
the idea is to turn the chicken upside down and make her vomit.
Actually, it's surprisingly easy, if extremely gross....
I grabbed Mary in the normal manner and popped her under my arm, facing forward.
Then I tipped her slightly forward, so that her head was facing diagonally downwards.
I got hold of her crop and slowly squished it - not in a pinch, but in a kind of movement like you'd squeeze a soft ball : from the the bottom of the crop.
She pushed her head forward and the stuff started pouring out - this is the gross bit!
It made a natural arc, which meant it wasn't messy.
The consistency of the liquid was like pale Bailey's. (and that colour too) and smelled like proper vomit.
then she decided she didn't like it so she shook her head and it all went everywhere!
so I had to adjust my method: I took the hand that was holding her underneath and put it around her neck (so very gently!).
And I had to firm my hold around her with my arm.
She then kept herself still.
I had to push the vomit out twice more before it stopped - Mary was making gagging faces when the vomit wasn't coming out, like she was encouraging it.
I hope this helps anyone who has sour crop: I was worried about the procedure because I didn't see it described in detail.