Taken from the RPRA web site:
http://www.rpra.org/Default.aspx?tabid=100
Racing pigeons can sometimes become ‘lost’ or disorientated.
They may come down to find food and water or to rest before continuing
on their way.
In a nutshell
If you find a tired racing pigeon
• please give water and food for a day or 2 at the most
• only contain it if the pigeon is injured or at risk from a predator
• try to release it after a day or two
• only report it to us if it will not clear and it is contained
• only report to us if it has a GB ring
*IMPORTANT
Please note that we DO NOT keep records of birds from other British unions. If you find a pigeon that has NEHU, SHU, WHU, NWHU or IHU etc on the ring, please contact that organisation using the details below.
Please DO NOT report birds that are NOT contained; the majority will clear of their own accord. It is not unusual for a pigeon to stay around for a number of days before it continues its journey.