In the breeding season 2018, the succesful reproduction of a couple of Mediterranean gull in the Natural Area of Doñana was verified for the first time. The Natural Process Monitoring Team of Doñana Biological Station (EBD) observed in Veta la Palma a couple incubating in May, which was not seen again later. In june, Alberto Pastoriza, an EBD technician, observed an adult with two small chikens , and in this case it was found that both managed to fly. These two couples settled in colonies of Black-headed gulls (Chroicocephalus ridibundus).
This season 2019 has returned to breed in Veta la Palma, in nthis case where a mixed colony of Black headed gulls and Slender-billed gulls (Chroicocephalus genei) was installed. Two couples were located and in both cases at lesat one chick was born, but in no case did they fly. In addition, the body of one of the adults, presumably haunted by a raptor, was found.
During the censuses carried out monthly since 2002, sightings of this species have been very sporadic, but from 2015 to the present, they have been more frequent, to the point of being able to succesfully breed these last two seasons.