Larus michahellis lusitanius

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marsmuusse
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Larus michahellis lusitanius

Post by marsmuusse » Fri Nov 20, 2009 9:44 pm

I've just read the post about the Madrid bird again, and crossed this site:

http://www.aranzadi-zientziak.org/filea ... a-esp.html

Anyone in this forum with contacts to the people photographing these ringed birds?
And, could it be arranged to add a section to gull-research.org, especially dedicated to these ringed birds with 800px photographs and more text explaining migration of this taxon, ID, moult process, phenotypic characteristics, etc?

Mars

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marsmuusse
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Re: Larus michahellis lusitanius

Post by marsmuusse » Wed Dec 08, 2010 11:55 pm

Gabi, Antonio and Mars are trying to create pages on this taxon. If you have any images, particularly of ringed birds, please feel free to send them to me. Its a very interesting taxon to enlarge upon by month-by month coverage of plumages.
A first idea:
http://gull-research.org/lusitanius/05cydec.html

Thanks, gabi, Antonio, Mars

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marsmuusse
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Re: Larus michahellis lusitanius

Post by marsmuusse » Wed Jul 06, 2011 9:46 am

http://www.gull-research.org/lusitanius/02cyjune.html
For about 100 2cy June birds, which mostly should be lusitanius on location (but some Med micha sneaked in without doubt).
Many thanks to Chris for all images.

Chris Gibbins
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Re: Larus michahellis lusitanius

Post by Chris Gibbins » Mon Jul 11, 2011 10:53 am

Hi. Great job Mars - I'm glad these images have found a useful home.

Chris

Cristian Mihai
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Re: Larus michahellis lusitanius

Post by Cristian Mihai » Thu Jul 28, 2011 2:20 pm

Great job, Mars. Beautiful pictures Chris (as usual, I would say :D ).

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marsmuusse
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Re: Larus michahellis lusitanius

Post by marsmuusse » Mon Dec 17, 2012 9:05 pm

We have been working lately on the pages of atlantis and lusitanius. Its an interesting group, obviously different in some plumages, still very closely related genetically. We decided to maintain the lusitanius group as separate from atlantis from the Azores (despite its close genetic relationship), and we include birds from the "southern Atlantic group" in atlantis.
So we have atlantis: Azores, Madeira, Canaries, Moroccan coast,
and we have lusitanius: Iberian Atlantic coast.
We'll see if this has to be maintained this way, we may work with caption to separate between pictures, etc.

Actually, just a post to tell we are adding "notes from the past" onto these pages, starting with:

- THE PORTUGUESE HERRING GULL (Larus argentatus lusitanius), NEW FORM OF HERRING GULL WITH YELLOW LEGS by C. JOIRIS IN: AVES, 15 (1978): 17-18. http://gull-research.org/lusitanius/05cynov.html

- Comparative study of four populations of Yellow-legged Gulls in Western Europe. by Anne TEYSSEDRE IN: L'Oiseau et R.F.O., V. 53, 1983, n° 1. http://gull-research.org/lusitanius/02cynov.html

If you know interesting additions, please let us know.
Enjoy reading!
Gabriel Martín
Antonio Gutierrez
Rui Caratão
Mars Muusse

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alfosse
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Re: Larus michahellis lusitanius

Post by alfosse » Wed Jan 02, 2013 10:13 am

marsmuusse wrote:...
Anyone in this forum with contacts to the people photographing these ringed birds?...
Three 1st-cy cr-'lusitanius' reached recently Western France, some pictures you may use on
red 6F5:G http://www.digimages.info/goeleu/goeleu.htm#6F5G & http://baguage.lpo-anjou.org/6F5G.htm
orange 5·BLF http://www.digimages.info/goeleu/goeleu.htm#5BLF & http://baguage.lpo-anjou.org/5BLF.htm
orange 0BL·C http://www.digimages.info/goeleu/goeleu.htm#0BLC & http://baguage.lpo-anjou.org/0BLC.htm
Alain Fossé
Angers, France

lou bertalan
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lusitanius outer rectrice

Post by lou bertalan » Wed Jan 02, 2013 12:01 pm

hi,

looking through some examples of lusitanius, i found noted in two places that lusitanius has a double black marked outer web of r6, as opposite to nominate michahellis: http://www.gull-research.org/lusitanius ... ept04.html
i can't really follow this feature since it is normal in all michahellis to show this, like e.g. in this classic example (nominate mich): http://www.helsinki.fi/~rauste/juvmic/m ... 67959.html

there' always a bit of the actual broad tail band in it, then a variable moonlike white insert and then again variable, a triunghiular black mark, sometimes elongated. prioncipally, i found this to be present in all michahellis taxons! true is that atlantis on average shows a broader tail band than nominate mich which is obvious even in the most canarian birds. such birds can have more marks on outer web of r6 than micha but this isn't as obvious as the wideness of subterminal band itself? an it was mentioned for lusitanius - which doesn't necessarily show a wide band. on the other hand there will be hardly any nominate mich with such a tail pattern: http://www.gull-research.org/lusitanius ... ept06.html

lou

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