Hi,
We have a chicken run with a mixed flock of birds, all hybrid, 3 White Leghorn, 4 Cream Legbar, 4 Copper Marans and 4 Columbian Blacktails. All the hens have been living together for about 2 years with the latest addition around a year ago .... that is apart from a rather fiesty Lavender Pekin Cockerel who I took from a friend as a favour - he was added about a month ago.
About 3 weeks ago one of the White Loghorns looked as if she was moulting heavily and there were increasing signs that she was being attacked / pecked at. This culminated when I saw blood coming from her head, she was being chased down and she was in quite a state. I separated her from the others thinking that is was the sight of red bringing on the attacks. She has been on her own in a very small run within the main run for about 3 weeks and was looking in good shape again so yesterday I let her out ... or to be precise she got out when I was changing the water but I was about to release her anyway.
I observered her thinking if all is OK I'll leave her with the others but immediately all the others pinned her down and were pecking at her. I went to her rescue and put her back in isolation, had I not acted I am certain they would have killed her within minutes.
I was going to purchase 4 new hens to add to the flock but have put that on hold .... does anyone have any suggestions? .... Could the addition of the cockerel have brought this on??
Pete