When I already moved to Minneapolis full of robins nesting in the trees. I was very delighted to share the rising of their young. I heard the chirping of newborn chicks. They tried to fly but not very far from the yard. I know these chicks were preys of the cats. When I let my cat out, some of the birds swooped on my cat. Their first attack were merely warning. So, I kept cat in my house for days. One morning I found a robin with broken wings. I took it into a box to the neighbor. She said it could heal by its own from the damage. Soon I saw the other robins brought food to the wounded one, and when it got recovered they flew to the south for winter. The next spring, I saw a robin flapping its legs to loosen the string and I put on gloves and carefully get the string out of its leg. The following summer, I saw a blue shell on the ground in my backyard. I noticed my cat playing with baby robins. I kept my cat into the house while the other birds were quiet and stayed away. I had no idea what to do, just trying to help it for safe. For years, I did not see robins in my backyard. I wondered they encountered the danger on their journey. This past spring, I again saw robins in my neighborhood. I was a telltale sign that the robins were coming back to my yard.