I just found our favorite and oldest hen Big Momma. I'm pretty sure it was a bird of prey. I went out to mow and came across her, freshly killed. The girls were out front where there is less tree cover. She was four years old and I marvel at their instincts for survival.
I free range my birds and, as I work from home, am outside many times during the day calling them in for scratch grain treats and counting the flock. I've witnessed my girls many times scooting for cover when they detect danger. Like the wild turkeys, they go about their business but are paying attention to their surroundings. Big Momma just ran out of luck I guess.
In 4 years of keeping chickens I have lost 3 to predators. There are two schools of thought to free ranging but part of the appeal of keeping hens for me is interacting with them and giving them some freedom to do what chickens do.
I'll miss the big mother bird and will wonder if I should lock the rest up and cover their run, but honestly the natural world is mysterious and has a way of evening things out.
In the movie 'Out of Africa' when Meryl Streep tried to stop the lions from attacking the oxen, her wise aide, while cleaning her wounds said, "Mumsa, she is bleeding, yet she does not have this ox. The lion, he is hungry, yet he does not have this ox. The wagon, it is heavy, yet it does not have this ox." The moral to me was, nature is in charge and knows what She's doing.
RIP Big Mother Bird.