Pronunciation: [fˈʊl fˈɛðə] (IPA) 
The correct spelling for "full feather" is /fʊl ˈfɛðər/. The first vowel sound is pronounced as "uh" (represented by /ʊ/ in IPA), which is followed by a double "l" and a short "e" sound (/ˈfɛðər/). The word "feather" refers to the lightweight, plumage-like structure that covers the body of birds. When we use the phrase "full feather", we mean that it is fully covered with feathers, implying the bird is healthy and well-groomed.
Full feather refers to the state of a bird's plumage when it is at its peak condition. It generally describes the stage where the bird has attained its complete set of feathers, which are dense, intact, and fully grown. This term is commonly used in reference to birds, especially those with vibrant or striking plumage like peacocks or flamingos, as well as poultry such as chickens or ducks.
A bird in full feather is characterized by having all its feathers matured, providing optimal functionality and insulation. Full feather indicates that the bird's plumage is well-developed, enabling it to fly efficiently, regulate its body temperature, and display its distinctive patterns or colors with vividness. It signals a healthy and adult avian specimen, as opposed to young birds or those undergoing molting, where feathers are being replaced.
Attaining full feather is a critical milestone for birds, particularly during the molting process. It signifies the completion of a cycle where ragged or worn feathers are replaced with fresh, strong ones. Therefore, observing a bird in full feather can provide insight into its overall health and ability to exploit its physical environment effectively.
In a broader sense, the term full feather can figuratively apply to any object or entity that has reached its pinnacle or prime state. It implies the culmination of development and the attainment of maximum potential, often associated with excellence or maturity.
The phrase "full feather" does not have a distinct etymology of its own. However, when considering the individual words "full" and "feather", we can explore their origins.
1. Full: The word "full" can be traced back to Old English "full" meaning "filled up, complete, perfect". This word is also related to Old High German "fol", Old Norse "fullr", and Gothic "fulls".
2. Feather: The term "feather" comes from Old English "fether" and is derived from Proto-Germanic "fethrō" or "fethrǭ". It is linked to Old High German "fedara", Old Norse "fjöðr", Gothic "fjaþr", Dutch "veder", and German "Feder".
