I know it’s been a month, but I just realized that I forgot to reply, haha
Thank you! She did end up going back to her usual self the next day. Such a relief, I don’t think I could’ve stood to see her act so sad for even a week.
Logically I know that there’s very little that could’ve been and even less that I can do now. My main suspicion is that something got the poor little guy. If he had been sick or injured, the hen would’ve stayed with him. If he were stuck, he would be chirping and the hen would be with him...