www.gull-research.org

Is this a GBBG? Could this be a female, due to the rounded head and small bill?

https://www.flickr.com/photos/48743015@N03/16377460771/
https://www.flickr.com/photos/48743015@ ... otostream/
https://www.flickr.com/photos/48743015@ ... otostream/
https://www.flickr.com/photos/48743015@N03/16377878061/
https://www.flickr.com/photos/48743015@ ... otostream/
https://www.flickr.com/photos/48743015@ ... otostream/

Thanks
Alex

Probably marinus. Do you have a shot of the tail?

Hello, the tail showed a faint and interrupted black terminal band, not so neat and thick like the one of michahellis.
This is a shot in flight. Poor quality, but the tail pattern and the inner primary flash are visible.

https://www.flickr.com/photos/48743015@N03/15771677924/

Thanks
Alex

OIther shots where the tail pattern is visible

https://www.flickr.com/photos/48743015@N03/16206533418/
https://www.flickr.com/photos/48743015@ ... otostream/
https://www.flickr.com/photos/48743015@ ... otostream/

Thanks
Alex

it's a GBBG allright, alex.