Greetings dpetzen,
You will find that there is little discussion regarding depression in animals. This is something mainly seen in small flocks.
But, it is a real condition. I was surprised to hear from my vet, that my hen was in deep grief...depressed over the death of her best friend.
I observed the same behavior, as you have described, in my hen, Ginger, earlier this year. I assumed she was ill. So, I decided to treat her with my herbal remedy. When she didn't respond, I took her to my vet. He examined her thoroughly, listened to her lungs and heart. Checked her for egg binding, took a sample of her feces and examined it under the microscope. He looked at me with concern in his face, and asked me if there were any changes in the flock. I told him about the hen that had passed away. He told me that my hen had an infection somewhere in her body, her feces was not right. But, that she was also very depressed. He felt she was reacting to the death of her friend.
He explained to me that some animals are very sensitive to sudden changes in the environment. Especially if the change involves a companion, even if the companion was not a best friend. Deep depression or grief in an animal, can initiate illness. I wanted to help Ginger get over her grief. I decided to put a stuffed toy chicken in the hospital crate with her. I was surprised again, when she cuddled with that toy every night, and sat with it during the day. After three days, she was returned to the flock. She recovered from her illness, and after a month or so, began to form a close relationship with the alpha hen.
Keep working with your hen, add environment enrichment, and interact with her more, too. And as Helloworld, mentioned adding music is good. I use my tablet and wireless speaker to provide soft music for the chickens. They lay consistently and do seem calmer when there is music.
While animals do experience depression, grief, and fear, they also live in the moment. So, they do eventually move forward in life.
These are my thoughts on your hen's issue. I hope I have been helpful.
God Bless
You will find that there is little discussion regarding depression in animals. This is something mainly seen in small flocks.
But, it is a real condition. I was surprised to hear from my vet, that my hen was in deep grief...depressed over the death of her best friend.
I observed the same behavior, as you have described, in my hen, Ginger, earlier this year. I assumed she was ill. So, I decided to treat her with my herbal remedy. When she didn't respond, I took her to my vet. He examined her thoroughly, listened to her lungs and heart. Checked her for egg binding, took a sample of her feces and examined it under the microscope. He looked at me with concern in his face, and asked me if there were any changes in the flock. I told him about the hen that had passed away. He told me that my hen had an infection somewhere in her body, her feces was not right. But, that she was also very depressed. He felt she was reacting to the death of her friend.
He explained to me that some animals are very sensitive to sudden changes in the environment. Especially if the change involves a companion, even if the companion was not a best friend. Deep depression or grief in an animal, can initiate illness. I wanted to help Ginger get over her grief. I decided to put a stuffed toy chicken in the hospital crate with her. I was surprised again, when she cuddled with that toy every night, and sat with it during the day. After three days, she was returned to the flock. She recovered from her illness, and after a month or so, began to form a close relationship with the alpha hen.
Keep working with your hen, add environment enrichment, and interact with her more, too. And as Helloworld, mentioned adding music is good. I use my tablet and wireless speaker to provide soft music for the chickens. They lay consistently and do seem calmer when there is music.
While animals do experience depression, grief, and fear, they also live in the moment. So, they do eventually move forward in life.
These are my thoughts on your hen's issue. I hope I have been helpful.
God Bless

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