I found a baby pigeon in Mumbai, India. It had fallen out of it's nest and was injured on it's left side. I took it in and gave it some seeds and water. I let it explore the house and it tried to fly and got hurt. It just stays in it's cage now and never comes out of it. It can't fly at all. And it trips while walking. Doesn't even touch the injured leg on the ground. What can I do to help?