• BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

    Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

France - Larus fuscus or argentatus ? (1 Viewer)

maxi6215

Active member
Hello,

I observed this gull the 5th of August at Dunkerque in France. I hesitate between a Larus fuscus and Larus argentatus, can you help me please ?

Cordially Maxime
 

Attachments

  • RSCN0060.jpg
    RSCN0060.jpg
    60.8 KB · Views: 64

maxi6215

Active member
Thank you for your help !

Could you tell me if it exists a character that will allow me to differentiate them in the future ?
 

lou salomon

the birdonist
structure: long and narrow wings in LBBG with a very long primary projection in the sitting bird - short and broad wings in herring gull; but this needs a bit of experience.
'window': inner primaries, as seen in your bird usually are completely pale in herring gull, dark or just a bit paler than outer primaries in LBBG.
bill on average weaker in LBBG but careful with sexual differences: males have stronger bills than females in all large gull taxa.
http://www.gull-research.org/hg/0start.html
http://www.gull-research.org/lbbg1cy/0start.html

cheers
 

Users who are viewing this thread

Top