My wife and I started a small flock of birds a year and a half ago. We are in in Central Ontario in Canada so things can get really cold up here.
We had a flock of 40 hens (50-50 mix of Plymouth Barred Rocks and Black sex-links (Black Stars)) and we have been having good egg production usually 80-85%.
In the last week and a half (mid January '16) we have lost 5 chickens to pecking on the neck only?
No aggression from any chickens observed, none eating the dead ones observed.
Could there be something else in coop?