Search found 88 matches

by Ronald Klein
Fri Nov 25, 2016 8:17 pm
Forum: Belarus
Topic: Information about the breeding colony Gatovo (Belarus)
Replies: 10
Views: 9262

Re: Information about the breeding colony Gatovo (Belarus)

Theo Muusse wrote:I see many straightforward herring gulls, a few uncertain from only one picture and just a few birds I would call 'pure' cachinnans.
The graellsii type is interesting, given the location, half way between graellsii and heuglini territory...

Theo
Theo, I disagree. Most seems to be Caspians.
by Ronald Klein
Wed Jan 27, 2016 9:42 am
Forum: News
Topic: IGM news?
Replies: 4
Views: 2436

Re: IGM news?

Interested people can send my e-mails: klein_hro@web.de
We also will visit the famous hybrid-colonies in East-Germany.
by Ronald Klein
Sat Dec 27, 2014 9:56 am
Forum: Identification
Topic: 1st-cy Polish red 6xxx
Replies: 2
Views: 1149

Re: 1st-cy Polish red 6xxx

Read the inscription from below.
..99 ?
In my view a Caspian Gull.
by Ronald Klein
Fri Dec 26, 2014 10:47 am
Forum: Estonia-Latvia-Lithuania
Topic: Ringed Gull's gallery
Replies: 5
Views: 12868

Re: Ringed Gull's gallery

Great work, Boris. Would be helpfull, if you could sort your gallery by species and origin of rings.
by Ronald Klein
Sat Dec 20, 2014 11:27 am
Forum: Identification
Topic: cr-gull green XLEN
Replies: 7
Views: 1843

Re: cr-gull green XLEN

All colonies in Lausitz are +/- mixed.
Gräbendorfer See (Reddern) is dominated by Caspians with some HG, Sedlitz mixed HG + CG.
YLG is in minority, >10%.
Many gulls in the colonies are hybrids, because they interbreed since 20 years.
But the number of pure CG is increasing.
by Ronald Klein
Wed Dec 17, 2014 5:26 pm
Forum: Identification
Topic: cr-gull green XLEN
Replies: 7
Views: 1843

Re: cr-gull green XLEN

A determination as chick mostly means nothing in these mixing colonies with hybridization. Best way is their identification later.
by Ronald Klein
Tue Oct 21, 2014 7:40 am
Forum: Caspian Gull
Topic: 4 birds: pure Caspians or...?!
Replies: 30
Views: 9902

Re: 4 birds: pure Caspians or...?!

In the Lausitz are 2 large colonies with ringing-activity. Gräbendorfer See (Reddern) and Sedlitzer See. Gräbendorf is the younger one, founded by Caspians in the last 5 years. Sedlitz exist since over 20 years and is clearly mixed, also with some YLG as third component. Interbreeding is common. Unf...
by Ronald Klein
Tue Dec 17, 2013 1:08 pm
Forum: Yellow-legged Gull
Topic: using wing tags on gulls
Replies: 1
Views: 1656

Re: using wing tags on gulls

Wing-tags will be lost or broken after a few years. In my opinion colour-rings are better for long-living species like gulls.
by Ronald Klein
Tue Dec 17, 2013 10:17 am
Forum: Caspian Gull
Topic: Breeding numbers of cachinnans in Germany
Replies: 3
Views: 2288

Re: Breeding numbers of cachinnans in Germany

Single CG individuals were located also in Baltic German Herring Gull colonies nowadays, but unknown if they breed there yet. Lets discuss about it in 20 years...
by Ronald Klein
Sun Dec 15, 2013 3:27 pm
Forum: Caspian Gull
Topic: Breeding numbers of cachinnans in Germany
Replies: 3
Views: 2288

Re: Breeding numbers of cachinnans in Germany

Maybe around 300, many of them in mixed pairs. The biggest colony is the Gräbendorf Lake near Altdöbern (Reddern).