hi cristian,
this bird deserves a very thorough look. i'll answer just in short sentences my first and 2nd impression (cause i'd like to watch a film now
). i thought: BINGO: heuglini! because of the soft pattern. and as such i though an advanced 2cy. but no, it's indeed a 3cy (2nd cycle) looking at all the 2nd gen. primaries. but then again, can a 2nd winter february heuglini look like this? why not. look at this pic from israel:
http://gull-research.org/heuglini/heug2cy/2cydec02.html, well, december, but also pretty retarded.
then a lot of may pics from finland. these wetsern heuglini totally look different to the ones wintering in the gulf states, looking more like graellsii...ok, i'll be back on this. keep cool, it could well be a graellsii. we got to ask visa rauste!
cheers for the mo.
later in the night.
http://1.bp.blogspot.com/_4f9yEgR0YKU/TUmoEykCCRI/AAAAAAAAIBY/HxMDjAIQYvI/s1600/LUA%C2%B7C+Azul.jpg looks pretty similar, a graellsii on 23.01.2011 in madrid.
unfortunately graellsii/intermedius are very very variable. have a look here:
http://www.digimages.info/goebru/goebru_A5.htm
still, a normal western LBBG usually looks more striated on head parts, more coarsly patterned on coverts, and in your last pic here:
http://www.birdforum.net/attachment.php?attachmentid=307264&d=1297028653 it looks very heuglini like. 2nd gen. tertials especially don't have any strong pattern.
most 2nd winter heuglin's in oman etc. are more advanced, showing hardly any immature coverts and tertials.
http://gull-research.org/heuglini/heug3cy/heug3cy01.html
finland:
http://www.elisanet.fi/hj.koskinen/Photosof3cyheuglinis2007.htm april 3cy heuglini by hannu koskinen.
http://www.elisanet.fi/hj.koskinen/3cyheu_Tara20080618.html in summer (june)
http://www.elisanet.fi/hj.koskinen/3cyheu_Karanoja20080522.html (may)
http://www.elisanet.fi/hj.koskinen/SubadLBBG_Tara20080420.html presumed graellsii/intermedius (april)
let's go over to GRF with it. :smoke:
i've trawled through visa's pics last night but didn't find anything useful - sure, heuglini arrives in finland in april, may.
lars' pics of 2nd cycle winter (nov/dec) don't specify if barabensis or heuglini though i think the more coarsly patterned birds belong to barabensis:
http://www.pbase.com/hans_larsson/barabensis_or_heuglini&page=all
the herastrau bird has clear striation on head, rel. short legs and a comparatively high and short bill plus darker scaps than usually seen on heuglini - all this favours
intermedius over heuglin's gull i guess.
if the matter can be solved: bare in mind there is no accepted record of heuglini in romania although cited in gulls (by annika f. as an october passage migrant on black sea) and 1 seen on sacalin during the AERC meeting back in 2003, but maybe just on basis of assumed likeliness? under time all the photographed pale mantled LBBG in romania seemed to belong to graellsii/intermedius. quite some intermedius seem to spread into the eastern mediterranean basin (see e.g. gulls of crete), birds in hungary, 2-3 claims from israel. i know of 5 sightings of probable intermedius from romania but no definite record of heuglini.
- in spite of that stragglers should pass on the western black sea coast on a yearly basis! note also sightings of presumed heuglini from poland and latvia.
and this 3cy (probable) intermedius from 12.08.2008 (dambovita river?):
http://www.birdforum.net/showthread.php?t=178334
cheers,