Juvenile definition, of, pertaining to, characteristic of, or suitable or intended for young persons: juvenile books. For exam­ ple, the juvenile is in its juvenal plumage. It becomes fully feathered at 10 weeks of age. Adult Common Loon in winter plumage with a faintly scaly back. Other authors use juvenile as a noun and juvenal as an adjective. Being highly social outside of the breeding season, tree swallows may form flocks of several thousand birds near roost sites. All Free.
Oshawa on 1 November 2011: Figure 3. See more. juvenile definition: The definition of juvenile is something having to do with children or young people.

The pattern and colours of plumage differ between species and subspecies and may vary with age classes. See also the definition ofJuvenal in the section below under the Humphrey The males of both species retain their juvenile plumage into adulthood, but they eventually lose it once they are fully mature. Juvenile … Characteristic of, intended for, or appropriate for children or young people: juvenile fashions. The pattern and colours of plumage differ between species and subspecies and may vary with age classes. juvenile, but not juvenal, as having the same meaning as immature,just adding to the confusion. This variant spelling of the word juvenal was introduced by the ornithologist Jonathan Dwight in 1900. However, the bald eagle progressively changes until it reaches adult plumage at five years. Meaning of tree swallow. At about five weeks, brown and black feathers begin to grow. In its first year, the mostly dark-colored juvenile can often be mistaken as a golden eagle. The juvenile plumage is worn briefly in most passerines, but much longer in loons, hawks, gulls, shorebirds and others. Some authors use juvenile, but not juvenal, as having the same meaning as immature, just adding to the confusion. b. Plumage (Latin: plūma "feather") is a layer of feathers that cover a bird and the pattern, colour, and arrangement of those feathers. juvenile - WordReference English dictionary, questions, discussion and forums. See more. Alfredo Begazo BIRDS IDENTIFYING BIRDS bald eagle plumage,eagles,Golden eagle plumage,tell apart a juvenile Golden Eagle from a juvenile Bald Eagle Adult Golden Eagle and Bald Eagle The Golden Eagle (Aquila chrysaetos) and the Bald Eagle (Haliaeetus leucocephalus) are the largest and most emblematic North American raptors.
Learn more. Notice in the pictures how its dark eye lightens throughout its first four years of life until it becomes yellow. nile (jo͞o′və-nīl′, -nəl) adj.

Also, see how its beak changes form gray-black to a vibrant yellow. However, the bald eagle progressively changes until it reaches adult plumage at five years. What does tree swallow mean? Since juvenile plumage is still relatively fresh at this time (often only a month or two older than feathers that have been replaced in the preformative molt), molt limits can sometimes be rather subtle.


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