GBBG or HG?

[hieraaetus]

Hi Guys,

I have just seen a bird at the local dump near Debrecen, Hungary. My first impression was that it is a good candidate for a 1st-winter GBBG but somehow its bill and size were not too convincing.
Other features like greater coverts, tail pattern look good to me.
I attached some photos showing it from most angles.

I would appreciate your comments on this bird!

Best wishes,

Gabor

[adriaens]

Hi,
it is a Herring Gull.
The underwing coverts are too pale for GBBG, the pattern on scapulars and (upper)wing coverts appears too thin/delicate, and the pattern on inner primaries is not too good either.

[hieraaetus]

Hi,
it is a Herring Gull.
The underwing coverts are too pale for GBBG, the pattern on scapulars and (upper)wing coverts appears too thin/delicate, and the pattern on inner primaries is not too good either.

Hi Adriaens,

Thanks for your comment!

How about that tail pattern? Is that within variation of the HG? And the very pale GC pattern? That looks exactly like that of a 1st-winter GBBG from last year.
Also, moult stage is a bit advanced for HG isn't it, as well as for GBBG?

To me this bird shows a mixture of features of YLG, GBBG, HG..I know that hybrid theories will never be solved unless knowning the origin but why not a hybrid of two of those three?

I have attached 2 shots of the 1st-winter GBBG from last year and two of this particular bird. I don't really see too much difference in the paleness on the underwing, at least not if I count in the shadow effect on the picture of the GBBG:)

Cheers,

Gabor

[adriaens]

Yes, all within variation of Herring Gull.

[marsmuusse]

Hi Gabor,
A bird with extensive and early moult. All scaps replaced and in both wings it has replaced inner greater and inner median coverts. Moult strategy like in michahellis...

[lou bertalan]

...or cachinnans. admittedly there's little in this bird (apart somewhat from bill shape) reminding of cachinnans but if we assume this bird is somewhere from western european russia, a combo of pale/contrasting herring gull plumage and some 'eastern genes' (whatever features they support or cosupport) of formerly more southern breeders like cachinnans - you might get a bird like this with (slight) advance in moult. a few replaced coverts are even within tatus itself.
actually such a micha-like tatus-pattern is most commonly found in the (eastern) baltic sea. cachoid traits in many ind. from finland might suggest influence of heuglini/cachinnans, such as the darker-than usual outer webs in inner primaries, seen in this bird.
isn't it funny, that 4 different species have been proposed for this bird?
to me it is at least an 80% argie.

[hieraaetus]

...or cachinnans. admittedly there's little in this bird (apart somewhat from bill shape) reminding of cachinnans but if we assume this bird is somewhere from western european russia, a combo of pale/contrasting herring gull plumage and some 'eastern genes' (whatever features they support or cosupport) of formerly more southern breeders like cachinnans - you might get a bird like this with (slight) advance in moult. a few replaced coverts are even within tatus itself.
actually such a micha-like tatus-pattern is most commonly found in the (eastern) baltic sea. cachoid traits in many ind. from finland might suggest influence of heuglini/cachinnans, such as the darker-than usual outer webs in inner primaries, seen in this bird.
isn't it funny, that 4 different species have been proposed for this bird?
to me it is at least an 80% argie.

Hi Lou,

Interesting what you said: "isn't it funny, that 4 different species have been proposed for this bird?"
That's almost how it went while I was watching the bird. Three (GBBG,HG,YLG) of those four species came in mind in a sequence depending on the angle, the different features could be seen or the comparison with the surrounding species. For some reason I didn't get the feeling of CG.
I saw the bird 2 days later. it was easy to recognize.

Cheers,

Gabor