zaterdag 28 januari 2012

Amerikaanse Zilvermeeuw?








Den Oever, Netherlands, 28-01-2012, 11.00 uur,
Larus smithsonianus

Is het er een of niet?



Ik kreeg reactie op birdforum.net van Rich Bonser;

Originally Posted by DivebirdView Post 
American Herring Gull
All pictures from this year are the same bird; http://waarneming.nl/soort/photos/934
It's a small bird with a dark mantle... both are issues regarding trying to nail a 4cy smiths this side of the Atlantic IMHO. I agree that it superficially resembles an AHG in certain aspects - the retained greater-coverts and an obvious tail band. But the suite of features it shows are within an argentatus too, and therefore I don't think you can conclusively say this is an AHG. Also, it does not 'feel' structurally like an AHG - no 'block head' and the bill seems rather thin and parallel-sided.


Ook reactie van Tom Johnson via facebook;

Hans Grotenhuis Hi Tom,

Can you say something about this gull, ALL pictures taken this year are the same gull; http://waarneming.nl/soort/photos/934 more at; http://www.dutchbirding.nl/gallery.php?p=bigpic&gal=8&fid=6757&page=1&lang=en

Tom Johnson; Hi Hans,
Aside from a couple of possible first cycle birds in the northeastern US, I've never knowingly laid eyes on a European Herring Gull. Something with this covert pattern, bill pattern, and degree of head/ body streaking seems pretty normal for an American bird, but I am not positive. Unfortunately, my reading comprehension of Dutch is pretty minimal - what are the current thoughts of the bird over there?




een artikel over herkenning;

http://www.dutchbirding.nl/~dbaftp/wietze/IdentificationOfAmericanHerring(Mullarney&Lonergan)-1.pdf

Na DNA onderzoek blijkt dit toch een "gewone" Zilvermeeuw.
http://waarneming.nl/waarneming/view/62825254

maandag 2 januari 2012

Kleine Burgermeester 2012





Omgeving Petten,
 02-01-2012

zaterdag 24 december 2011

Oehoe




Oehoe, Heiloo, 24-12-2011, 10.00 uur.

zaterdag 10 december 2011

Rosse Franjepoot


Jewelpolder, omg. Callansoog
10-12-2011

zaterdag 26 november 2011

Crab plover

Crabplovers,  Wadi Lahami, Egypt, oktober 2011.


7 oktober 2011 6.10 uur am.







9 oktober 2011, 15.30 uur.

 

10 oktober 2011, 17.10 uur.

 

12 oktober 2011, 15.50 uur.

maandag 31 oktober 2011

zondag 30 oktober 2011

Woestijntapuit




Oenanthe deserti,

 Hondsbosche zeewering,
 30 oktober 2011.