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An Araucana egg (left) with white and brown eggs for comparison. The Araucana (Spanish: Gallina Mapuche) is a breed of domestic chicken from Chile. The name derives from the historic Araucanía region where it is believed to have originated. It lays blue-shelled eggs, one of very few breeds that do so.
The Ameraucana is an American breed of domestic chicken. It was developed in the United States in the 1970s, and derives from Araucana chickens brought from Chile. It was bred to retain the blue-egg gene but eliminate the lethal alleles of the parent breed. There are both standard-sized and bantam versions. [2]
In American usage, an Easter egger or Easter-egger is any hybrid or mixed-breed chicken resulting from the breeding of a bird carrying the blue egg (oocyan) gene with one that lays brown eggs. Eggs from such a bird may be any shade of blue or brown, [ 1 ] : 175 or occasionally pink or pale yellow. [ 2 ]
To figure out what causes the dreaded green ring and, more importantly, how to prevent it, we talked with Lisa Steele, a 5th-generation chicken keeper, founder of the Fresh Eggs Daily blog, author ...
From 1930 it was raised in some 70% of the country. However, egg production was found to be variable, and birds did not adapt well to intensive management. Numbers declined; between 1961 and 1973 its percentage of the national chicken population fell from 11.4% to 1–2%. [4] Conservation efforts began in the 1970s. [4]
The physical traits used to distinguish chicken breeds are size, plumage color, comb type, skin color, number of toes, amount of feathering, egg color, and place of origin. [1] They are also roughly divided by primary use, whether for eggs, meat, or ornamental purposes, and with some considered to be dual-purpose. [1]
Pullets in the three possible colours. The Silverudd Blue is a medium-sized chicken. Hens weigh approximately 1.5 kg, and cock birds about 2.5 kg. [1]As in other blue chicken breeds, three colours occur in accordance with the frequency of the dilution gene: black, blue and splashed white, in Mendelian proportion (1:2:1).
The domestic chicken has subsequently hybridised with grey junglefowl, Sri Lankan junglefowl and green junglefowl; [49] a gene for yellow skin, for instance, was incorporated into domestic birds from the grey junglefowl (G. sonneratii). [50] It is estimated that chickens share between 71 and 79% of their genome with red junglefowl. [49]