Insufficient diet and prolonged exposure to heat are often the cause of the premature dropping of the feathers of the peacock's colorful display of their magnificent feathers.
A male bird shows bright feathers to attract a mate. What type of behavior is this?
a little stringing things.
two years till the males will have their full display feathers
It is simply the display from a computer that shows active pictures using technology.
While the birds are the only currently living animals (specifically vertebrates) with feathers, the fossil record clearly shows that some species of the reptiles (specifically the dinosaurs) had feathers (and these are the ancestors of the birds).
A banner display is used in trade shows to attract potential customers to seek information from particular traders.
These are called "Mic Flags"
Display Devices
Courtship Behavior
Intriguing question. It's hard to picture, and certainly sauropods' NEED for feathers is hard to see, but there's no reason it should be impossible. They MIGHT have developed feathers for display, or for cooling planes (though feathers are typical supposed to provide warmth) or for camoflage.
The 2 Pence coin reverse design (1971 to 2008) shows the "Badge of the Prince of Wales" which is a plume of ostrich feathers in a coronet.