I have about 20% of my bantam cochin hens that crow and all together all my hens about at a 10%. Who said hens don't crow? I had one of my cochins in the house and she curled up on my chicken coat and fell asleep so I thought I would let her stay there all night. Well sun up and she is doing the old "er-ERRRRRR!" But oh no not once, not twice, but on and on and on. I put the pillow over my head and go back to sleep. An hour later she starts in again "er-ERRRRRR!!" over and over. Then it is another crow "EERR" and "er-ERRRR". I thought that is enough, I have heard so many of my hens crow this is ridiculouse. Does anyone else have this phenomena????