Broken bones are common, so handle the bird very gently and as little as possible. Do not stress the bird by holding it or allowing people to “come look.” Humans are predators to a bird and the torment of prolonged handling or exposure to humans on top of its injury may prove too great a shock for recovery. Every non-necessary exposure to humans worsens their chance of survival.
Place in a secure container. Do not place grass, twigs or leaves in the container as these will only serve to spread parasites and bacteria to the bird, which is already physically compromised. Newspaper or paper towels on the bottom of a small box or even a paper bag will do fine. For very small birds try to find a small nest-like container such as a berry box and fill it with soft tissue.