Found a baby gull
Baby gulls leave the nest when they are a few days old and move to a 'safe' location nearby.
It's not unusual for baby gulls to fall from a cliff or roof-top nests and their parents will continue to feed the baby gull until they're five to six weeks old. Gulls only feed their babies a handful of times a day, so if the infant looks healthy and alert it's likely being fed by parents.
When to help a baby gull
Uninjured baby gulls should be left where they are in the care of their parents. People and animals need to stay away and the baby gull shouldn't be offered any food.
If the gull chick is very young (ones that are very small and still covered in a fluffy down, and prefer to run rather than fly away), then it can be returned to a roof or adjacent high spot (like a fence or wall) if it's in a position of danger, but only where possible and only when safe to do so. It's best to monitor them to ensure the parents are still attending.
Be careful, concerned parent gulls may swoop and try to protect their chick if you approach it.