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Helmet (pigeon)
The Helmet is a breed of fancy pigeon developed over many years of selective breeding Selective breeding (also called artificial selection) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits (characteristics) by choosing which typically animal or plant mal .... Helmets, along with other varieties of domesticated pigeons, are all descendants from the rock pigeon (''Columba livia''). The breed has medium face, short face, plain-head and crested varieties. Helmet pigeons have been referenced since the early 15th century and appear to have origins in Germany. The modern varieties were refined in the latter 20th century.American Helmet Association See also * List of pigeon breeds * Polish Helmet References External links * {{Domesticated-pigeon-breed-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breed
A breed is a specific group of domestic animals having homogeneous appearance ( phenotype), homogeneous behavior, and/or other characteristics that distinguish it from other organisms of the same species. In literature, there exist several slightly deviating definitions. Breeds are formed through genetic isolation and either natural adaptation In biology, adaptation has three related meanings. Firstly, it is the dynamic evolutionary process of natural selection that fits organisms to their environment, enhancing their evolutionary fitness. Secondly, it is a state reached by the ... to the environment or selective breeding, or a combination of the two. Despite the centrality of the idea of "breeds" to animal husbandry and agriculture, no single, scientifically accepted definition of the term exists. A breed is therefore not an objective or biologically verifiable classification but is instead a term of art amongst groups of breeders who share a consensus around what qua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
