The Polbar is a
breed of chicken from Poland. It was created between 1946 and 1954 by Laura Kaufman, who
crossed the native Polish
Green-legged Partridge
The green-legged partridge (''Tropicoperdix chloropus''), also known as the scaly-breasted partridge or green-legged hill-partridge, is a bird species in the family Phasianidae. It is found in forest in Indochina, ranging slightly into southernm ...
breed with American
Plymouth Rock
Plymouth Rock is a boulder in Plymouth, Massachusetts, that symbolizes the historical disembarkation site of the '' Mayflower'' Pilgrims who founded Plymouth Colony in December 1620, and has been claimed to be the Pilgrims' actual landing site.
...
birds. The aim was to introduce the barred gene of the Plymouth Rock to make chicks
auto-sexing
Auto-sexing breeds of poultry are those in which the sex of newly-hatched chicks can be determined from the colour and markings of the down (feather), down. Some breeds of chicken, of domestic goose, goose and of domestic pigeon have this char ...
– female chicks can be distinguished from males at one day old by the longer black eye-stripe.
There is one Polbar flock in Poland, at the Laura Kaufman Research Station of the
University of Life Sciences of
Lublin
Lublin is List of cities and towns in Poland, the ninth-largest city in Poland and the second-largest city of historical Lesser Poland. It is the capital and the centre of Lublin Voivodeship with a population of 336,339 (December 2021). Lublin i ...
, in the eastern part of the country. It is kept for conservation only. At the end of 2014 there were 1100 birds.
References
{{reflist, 45em, refs=
[{{cite book , chapter=Annex: Breeds currently recorded in the Global Databank for Animal Genetic Resources , editor-last1=Rischkowsky , editor-first1=Barbara , editor-last2=Pilling , editor-first2=Dafydd , title=The State of the World's Animal Genetic Resources for Food and Agriculture , date=2007 , publisher=FAO , location=Rome , isbn=978-92-5-105762-9 , url=https://openknowledge.fao.org/items/435afdb0-3d4d-42b5-9a04-758ff80b89a1 , chapter-url=https://web.archive.org/web/20200623201209/http://www.fao.org/3/a1250e/annexes/List%20of%20breeds%20documented%20in%20the%20Global%20Databank%20for%20Animal%20Genetic%20Resources/List_breeds.pdf ]
[Breed data sheet: Polbar/Poland]
Domestic Animal Diversity Information System of the Food and Agriculture Organization of the United Nations. Accessed January 2016.
[Magdalena Gryzinska, Ewa Blaszczak, Aneta Strachecka, Grazyna Jezewska-Witkowska (2013)]
Analysis of Age-Related Global DNA Methylation in Chicken
''Biochemical Genetics'' 51 (7-8): 554–563. {{doi, 10.1007/s10528-013-9586-9.
Chicken breeds
Chicken breeds originating in Poland