Catbird

Does Catbird love blueberries? I don't know, but here is what I see. She flies down and lands on Elder. From there, she takes in the berry bushes until she located a ripe one. Then she flies over, grabs it and flies off. There must be other places she can look for food. This time of year the berries on our bushes ripen slowly and randomly. The bushes are not covered with ripe berries. This makes it more difficult for Catbird. She really has to look and locate the ripe ones. Why does she choose to work this hard to find one ripe berry?