Animals give us so much in our life..I always say nite to the dogs...not the chickens as they are in bed long before me 
But of course one says good night. We refer to putting the chickens away as reading them a bedtime story.
I like to thank the chickens for eggs, and always thank oakie after milking her

. as i go on to yard in the morning i ask the horses how they are and if they have slept ok.. Little habits.