For a depressed dog, due to the loss of another dog in the family, I do a few different things. Basically, more of their favorite things. Walks, rides in the car, playing with their favorite toys, giving some of their favorite treats, good things to chew on, belly rubs, etc. I try to promote pleasurable activities, to stimulate pleasure chemicals in the brain. Stimulating activities increase brain activity, as well as the rest of the body. Depression isn't just an emotion, it's a physical condition.
For a chicken, I would normally suggest you give her some of her favorite treats. Since she's not eating treats with the others, can you try giving her something really special, on her own? Maybe spoil her with some live bugs from the pet store? A few mealworms or crickets would be very exciting and stimulating. Or a big juicy grasshopper, if you can find one. There are all kinds of foods chickens like. Besides her favorites, you could also try some new foods. The one thing mine can't resist, is hulled sunflower seeds.
If she's normally penned, you could try letting her go on a little supervised walk. Just follow along with her, while she explores and forages. If you can, dig up a clump of grass and put it in her pen. Let her eat the grass and dig/scratch through the dirt, looking for whatever she can find. Sprinkle a little seed for her to find in her pen during the day. Maybe give the chickens a little leaf pile to scratch through. You could put some greens in a suet cage and hang it in her pen to peck at. Basically, anything she might like to do and anything that would encourage activity.
I suspect that temporarily, you might have better success working with her away from the other chickens, since they'll probably gobble everything down immediately, before she has time to try anything. Just for a little bit each day, until she starts to come out of this. I hope she adjusts to the loss of her friend soon. Poor girl. Chicken relationships can be so challenging, sometimes.
I'm sure there are a lot of people that would leave her be and do nothing. I just wanted to offer some suggestions, as possibilities.
For a chicken, I would normally suggest you give her some of her favorite treats. Since she's not eating treats with the others, can you try giving her something really special, on her own? Maybe spoil her with some live bugs from the pet store? A few mealworms or crickets would be very exciting and stimulating. Or a big juicy grasshopper, if you can find one. There are all kinds of foods chickens like. Besides her favorites, you could also try some new foods. The one thing mine can't resist, is hulled sunflower seeds.
If she's normally penned, you could try letting her go on a little supervised walk. Just follow along with her, while she explores and forages. If you can, dig up a clump of grass and put it in her pen. Let her eat the grass and dig/scratch through the dirt, looking for whatever she can find. Sprinkle a little seed for her to find in her pen during the day. Maybe give the chickens a little leaf pile to scratch through. You could put some greens in a suet cage and hang it in her pen to peck at. Basically, anything she might like to do and anything that would encourage activity.
I suspect that temporarily, you might have better success working with her away from the other chickens, since they'll probably gobble everything down immediately, before she has time to try anything. Just for a little bit each day, until she starts to come out of this. I hope she adjusts to the loss of her friend soon. Poor girl. Chicken relationships can be so challenging, sometimes.
I'm sure there are a lot of people that would leave her be and do nothing. I just wanted to offer some suggestions, as possibilities.