
I know the devastation you are feeling. At our old place, my favorite hen was attacked and killed by our next door neighbor's dogs. For a few days afterward, I felt emotionally detached. I went through the motions of feeding and caring for them but without the favorite, it felt like just that: going through the motions. This week's events were far more devastating. 3 of my best layers, 6 3-month-olds, my two silkie roos, 2 ducks and a chick hatched by a broody hen. Another hen is wounded and I don't expect her to make it.
The only advice I can give you is to hang in there. Keeping poultry is going to have its devastating moments. Between predators and illness, losses happen and it can be anything from sad to devastating when it does. What I have found however is that they provide much more than eggs. I keep a lawn chair by my chicken coop and all I have to do is go and sit in it and I am surrounded by birds, some of whom hop up to sit on my lap, and others just surround me and "talk" to me. They are unfailingly happy to see me, and once they have greeted me, they wander away, stopping to scratch in the dirt, nibble on greenery or catch a bug. I feel at peace when I am there. The peace and joy I get from them is worth it to me to keep on keeping on. I hope you find the same.