I have been on some vessels where we have had different birds on the ship and there has been some debate as what to do with them.
The most common one to land is racing pigeons but sometimes you get other wild ones.
Some people say you are not meant to feed or water the racing pigeons as they will stay with the ship and die, other people say you are meant to feed them and water them. Sometimes they can be very tame and friendly so it is a lot of people’s natural instinct to try and feed and water them, but that might do more harm than good.
Also if we are meant to feed them with food commonly found on vessel what do we feed them with?
I have read online that brown rice is a great food for birds (cooked of course because if it is raw it will swell inside them and harm them) but brown rice is not common on vessels, mostly its just normal white rice.
I think you are also meant to give them water out of a hard plastic container, I have seen some people give them water out of polystyrene cups and they start eating the cup which I imagine is not good for them.
If racing pigeons hang around the vessel could it be a good option to catch them and keep them contained until the ship goes to port and call the relevant wildlife rescue organisation to come and get them? Someone told me a story they heard of someone who used to do that, they would put all the wild bird that were hanging around the vessel into a big cage in the forecastle store and then hand them over to wildlife experts when the ship got to shore.
I have tried googling the correct procedure of what to do with bird that land on ship at sea but there doesn’t seem to be many resources giving relevant advice.