A「bird」that spends most of its life on the ground and simply does not fly very well, as if still「in training」a bird with grand「plumage」long tail「feathers」as PLUMES and colorful wings: a PHEASANT, a bird with a short lifespan normally, so the entire population is VERY YOUNG:「Rarely if ever does a pheasant die of old age, in fact, the average life span is less than [one] year. The pheasant is a prey species and must face [four] major sources of mortality beginning the day it is laid in the nest as an egg through the day it dies.」
　　[　https://www.pheasantsforever.org/Habitat/Pheasant-Facts.aspx 2023-05-17　]　
　「In training courtship display」also describes female pheasants that seemingly are in need of further training when nesting and roosting:「After fertilization takes place, courtship ends. The hen chooses a nest site, lays and incubates the eggs, and broods the chicks with no help from the male, whose reproductive role ends with mating. Early in the nesting season, hens may seem rather careless about egg laying. Eggs may be dropped at random and left unconcealed. Later, a hen may initiate a nest, lay a few eggs in it, and then abandon it. Frequently, several hens lay eggs in a single nest, termed a 'dump nest' by biologists. It is not uncommon for a dump nest to contain 20 to 30 eggs. As spring progresses, random egg laying ceases. Pheasants are ground nesters, whose nests consist of small depressions lined with grass, leaves and other plant material. …Hens that lose early nests and choose small grain fields as renesting sites may also be successful…. A nesting hen lays eggs at a rate of about one per day. She remains at the nest only to deposit eggs, which may number from one to 20 when the clutch is completed…. During egg laying, the hen seems only a casual visitor to the nest, staying just long enough to deposit each egg.」
　　[　link now-dead was https://www.npwrc.usgs.gov/resource/birds/pheasant/spring.htm 2012-12-28　]　
　Interestingly, some Japanese versions of this glyph use multiple「grasping and reaming」(⺕) elements or「gushing chunks」(勿, without the 'head' attached) rather than the two congealing no-longer-integrated feet elements used in traditional Chinese glyphs, yet both sets of elements could describe a PLUME, only that in the Japanese case the referent may be to release of a long, arching discharge of fluids under pressure by a medical services provider rather than to no-longer-integrated feet that were not commonly found in Japan. Needless to point out perhaps is that the Chinese uses of no-longer-integrated feet (upper elements) also were designed to cause the same sort of release of fluids under pressure in long, arching spurts skyward, and at times gushing a few chunks.

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: long-tail pheasant
Unihan extended: surname; a kind of pheasant; plumes
EDRDG: surname; kind of pheasant