I have added a new page to the website Birdwatching Alentejo: Kumlien´s Gull
To view the page click on the next link:
https://birdwatchingalentejo.com/kumliens-gull-kumliens-meeuw-kumlienmowe/
Happy Birdwatching in Portugal,
Bert
P.s. We do offer individual guided birdwatching tours, trips, excursions and also birding holidays.