Would You Help an Injured Pigeon?

Today, a large wood pigeon flew into my patio window. I heard the bang from upstairs as I thought it was the postman knocking on the door. I went down to investigate, and found the poor bird sitting in a pile on the patio. My immediate reaction was to allow the bird time to gain its composure, and then it would undoubtably fly off none the wiser, apart from with a very bad headache. However, hours later and it was still sitting there with its features puffed up and its eyes closed. What was I to do?