CGs_Hortobágy_Hungary_2014_March_I

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hieraaetus
Posts: 104
Joined: Fri Oct 22, 2010 7:53 am

CGs_Hortobágy_Hungary_2014_March_I

Post by hieraaetus » Tue Mar 11, 2014 7:47 am

Hi Guys,

Yesterday, I visited the Eagle hide again, only to find Caspian Gulls instead:))

Before I upload some pictures of ordinary looking birds, let me go ahead and ask you about these ones.
One of them is a 2nd-winter with heavily barred rump. I think, I have never seen this before at this age-group. Maybe a hybrid with HG? I also attached a picture of a bird I consider to be average-looking in this respect.
(Sorry, I wrongly named the pictures as 3rd winter, so I corrected them in the "File comment")

The other seems to be a 1st winter to me but it has moulted P1-P6 already. This is another phenomenon I haven't encountered yet (If I recall it right).

Let me know what you think!
Thanks in advance.

Cheers,

Gabor
Attachments
CG_3rdwinter_normal_2512.jpg
2nd winter with white, normal-looking rump
CG_3rdwinter_normal_2512.jpg (267.07 KiB) Viewed 1972 times
CG_3rdwinter_barred_rump_2921.jpg
2nd winter with heavily barred rump
CG_3rdwinter_barred_rump_2921.jpg (214.08 KiB) Viewed 1972 times
CG_3rdwinter_barred_rump_2834.jpg
2nd winter with heavily barred rump
CG_3rdwinter_barred_rump_2834.jpg (228.64 KiB) Viewed 1972 times
CG_3rdwinter_barred_rump_2812.jpg
2nd winter with heavily barred rump
CG_3rdwinter_barred_rump_2812.jpg (206.31 KiB) Viewed 1972 times
CG_1stwinter_advanced_3074.jpg
advanced 1st winter or retarded 2nd winter? I would opt for the first..
CG_1stwinter_advanced_3074.jpg (250.23 KiB) Viewed 1972 times
CG_1stwinter_advanced_3058.jpg
CG_1stwinter_advanced_3058.jpg (238.14 KiB) Viewed 1972 times

lou bertalan
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Location: stuttgart, SW germany
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Re: CGs_Hortobágy_Hungary_2014_March_I

Post by lou bertalan » Tue Mar 11, 2014 9:11 am

hi gabor,

2 stunning birds!
i haven't seen such a barred uppertail in 2nd cycle cachinnans either and i guess the simplest explanation is indeed herring gull blood.
and it's the first caspian (if i remember right) replacing inner wing during 1st winter already, while in michahellis i have encountered this phenemenon in at least 3 cases.
nice documentation and thanks for sharing. :)

lou

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Theo Muusse
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Location: Dordrecht

Re: CGs_Hortobágy_Hungary_2014_March_I

Post by Theo Muusse » Fri Mar 14, 2014 10:32 pm

The moult in the inner wing is different in both wings, with p4-p7 in the right wing and p1-p6 in the left, together with S1.
This reminds me of a bird having moulted as a result of some illness.
This is accentuated by the un-moulted secondaries and rectrices.
If it is really a very advanced bids I would like to see all coverts moulted as well as the secondaries and rectrices.

Theo

hieraaetus
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Joined: Fri Oct 22, 2010 7:53 am

Re: CGs_Hortobágy_Hungary_2014_March_I

Post by hieraaetus » Sat Mar 15, 2014 1:34 pm

Theo Muusse wrote:The moult in the inner wing is different in both wings, with p4-p7 in the right wing and p1-p6 in the left, together with S1.
This reminds me of a bird having moulted as a result of some illness.
This is accentuated by the un-moulted secondaries and rectrices.
If it is really a very advanced bids I would like to see all coverts moulted as well as the secondaries and rectrices.

Theo
Hi Theo,

I checked for another picture showing the right wing from a different angle.
You are partly right, P8-10 are old, however, to me it seems that P7 is missing, P1, P3, S2 and S3 are moulted, as well. Also some tertial in the left wing and at least one tail feather.
Of course, it still can be sick:)
Cheers,

Gabor
Attachments
CG_1stwinter_advanced_3062.jpg
CG_1stwinter_advanced_3062.jpg (286.29 KiB) Viewed 1953 times

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