Here is a sample of cach's from the breeding grounds.
Theo
ad cach from Romania, May 2009
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Theo Muusse
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- 6971cach.jpg (180.21KiB)Viewed 15481 times
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- 6942.jpg (172.33KiB)Viewed 15481 times
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- 6785.jpg (212.72KiB)Viewed 15481 times
Re: ad cach from Romania, May 2009
great to see that you finally had some time to go through your "old" pics Theo. Two things; one, lots of gulls at Westkapelle see I guess I'll you there thursday. Two, bring on the Great Black-headed pics!
pim
pim
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Theo Muusse
- Posts:409
- Joined:Fri Oct 02, 2009 6:24 pm
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Re: ad cach from Romania, May 2009
This one?
Theo
Theo
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Re: ad cach from Romania, May 2009
Very good cachinnans images!
Interesting to note the variation in the shape and width of the dark mark on p5.
JanJ
Interesting to note the variation in the shape and width of the dark mark on p5.
JanJ
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Theo Muusse
- Posts:409
- Joined:Fri Oct 02, 2009 6:24 pm
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Re: ad cach from Romania, May 2009
Indeed, have a look at this one!
Also, Mars, can you use this one for your primary count quest? p3 old on 20090513.
Theo
Also, Mars, can you use this one for your primary count quest? p3 old on 20090513.
Theo
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Theo Muusse
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Re: ad cach from Romania, May 2009
Some do show very broad bands on p5.
Theo
Theo
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Theo Muusse
- Posts:409
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Re: ad cach from Romania, May 2009
Some do not have black at all and show a heavy angled bill. Also seen in Romania on 20090513, but not a hardcore cach either (as one in the other topic).
Is Herring Gull really not breeding in Romania? Or is this a really late migrant? Or can cachinnans look like this?
Theo
Is Herring Gull really not breeding in Romania? Or is this a really late migrant? Or can cachinnans look like this?
Theo
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Theo Muusse
- Posts:409
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Re: ad cach from Romania, May 2009
Note p1 growing in with p2 still old.
Theo
Theo
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Re: ad cach from Romania, May 2009
Good ones again Theo!
Although the dark mark on cachinnans varies - which is also shown here - and some can have a surprisingly thin mark, sometimes not meeting on the shaft, but a total lack of any markings I have yet to see. The combination of billshape, some males are quite heavy-billed but that blunt-tipped michahellis bill... and headstructure (give and take the angle) suggest maybe a hybrid, probably with argentatus genes. Could michahellis be involved with such a primary and p5 pattern, I would think not! (?) Also the a great tendency for cachinnans to have the p5 mark broader on the outer web is well shown here to, often also in those with a thin mark. Some can show a broad outer web mark but with only a small dot on the inner web or a thin dark line as shown in one of Theos pic.
Fascinating gull cachinnas, the king of gulls!
JanJ
Although the dark mark on cachinnans varies - which is also shown here - and some can have a surprisingly thin mark, sometimes not meeting on the shaft, but a total lack of any markings I have yet to see. The combination of billshape, some males are quite heavy-billed but that blunt-tipped michahellis bill... and headstructure (give and take the angle) suggest maybe a hybrid, probably with argentatus genes. Could michahellis be involved with such a primary and p5 pattern, I would think not! (?) Also the a great tendency for cachinnans to have the p5 mark broader on the outer web is well shown here to, often also in those with a thin mark. Some can show a broad outer web mark but with only a small dot on the inner web or a thin dark line as shown in one of Theos pic.
Fascinating gull cachinnas, the king of gulls!
JanJ
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lou bertalan
- Posts:503
- Joined:Tue Nov 03, 2009 2:43 pm
- Location:stuttgart, SW germany
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Re: ad cach from Romania, May 2009
well, this one might be the first you see, jan?JanJ wrote:Good ones again Theo!
but a total lack of any markings I have yet to see.
JanJ
i myself waited long time to see such a bird - without any p5 mark and surely my exitement is big - thanks, theo.
we'll probably not be able to know if it has argentatus genes or not, as far as i know argentatus does not breed anywhere in the area (within 1000 km), the closest hybrid populations being in white russia, russia and of course, poland. disturbing, but we might need to accept that a small percentage of cachinnans indeed lack a p5 mark. see lastest 2 pics of a bird from may 2007 here: http://lou.bertalan.de/birds/
is there some red on upper mandible, theo? it would emphasize the michahellis look of it. nonetheless i think with the p9 and 10 grey tongues, the very large p9 mirror, dark iris looks like it excludes either argentatus & michahellis.
cheers,
lou