Unlike Indian peafowl, the green peahen is similar to the male, only having shorter upper tail coverts, a more coppery neck, and overall less iridescence.The Congo peacock male does not display his covert feathers, but uses his actual tail feathers during courtship displays.Tags: Essay Writing Competitions For High School StudentsSolving Environmental ProblemsWhat Is An Research Paper AbstractDissertation And Thesis SearchPro Wrestling EssayGood Literature Review SampleEthical Theory EssaysCause And Effect Essays Already WrittenCross Currency Swap ThesisEasy Steps To Writing An Essay
Hybrids between Indian and Green peafowl are called Spaldings, after the first person to successfully hybridise them, Mrs. Unlike many hybrids, spaldings are fertile and generally benefit from hybrid vigor; spaldings with a high-green phenotype do much better in cold temperatures than the cold-intolerant green peafowl while still looking like their green parents.
Plumage varies between individual spaldings, with some looking far more like green peafowl and some looking far more like blue peafowl, though most visually carry traits of both.
Alternately-coloured peafowl are born differently coloured than wild-type peafowl, and though each colour is recognisable at hatch, their peachick plumage does not necessarily match their adult plumage. Although albino peafowl do exist, this is quite rare, and almost all white peafowl are not albinos; they have a genetic condition called leucism, which causes pigment cells to fail to migrate from the neural crest during development.
Leucistic peafowl can produce pigment but not deposit the pigment to their feathers.
The Indian peacock has iridescent blue and green plumage, mostly metallic blue and green, but the green peacock has green and bronze body feathers.
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In both species, females are as big as males, but lack the train and the head ornament.Chicks of both sexes in all the species are cryptically coloured.They vary between yellow and tawny, usually with patches of darker brown or light tan and "dirty white" ivory.This results in the complete lack of colouration in their plumage and blue-grey eye colour.Pied peafowl are affected by partial leucism, where only some pigment cells fail to migrate, resulting in birds that have colour but also have patches absent of all colour; they, too, have blue-grey eyes.Such structural colouration causes the iridescence of the peacock's hues.Interference effects depend on light angle rather than actual pigments.The latter is especially prominent in the Asiatic species, which have an eye-spotted "tail" or "train" of covert feathers, which they display as part of a courtship ritual.The functions of the elaborate iridescent colouration and large "train" of peacocks have been the subject of extensive scientific debate.The two Asiatic species are the blue or Indian peafowl originally of the Indian subcontinent, and the green peafowl of Southeast Asia; the one African species is the Congo peafowl, native only to the Congo Basin.Male peafowl are known for their piercing calls and their extravagant plumage.