Every day when I go check on our chickens they run to me as if to say "Hi! What's going on?" They are curious about what I'm doing. They are happy when I talk to them and tell them what I'm doing. They are interested in what I have to say.
Not only that, they are satisfied with what they have. They are low maintenance. They don't complain about what they have or want more than they need.
I guess what it boils down to is that they are happy little creatures that appreciate others and are grateful for what they have. Maybe some people could learn a little from chickens.
