Alice McLachlan, 22, a student at Bangor University, was outside Peep nightclub in the city when she stumbled across the injured seagull.
Her boyfriend, Daniel Geraghty, 22, filmed the incident in the early hours as Alice tried to nurture the seagull, nicknamed Greg.
After moving the seagull off the road, Alice ran home to get the bird some bread, before being bitten while trying to feed it.