You can tell if they are male or female because of their size. The male is bigger than the female who is the smalleer one.
Males are usually brighter colored.
Just like any other bird, The males are born with more exotic more beautiful feathers to attract a mate. Osprey make noises and show off their feathers. After that the female will deside from there.
if they are the same type of ird it makes it better then if she is not biting screaming or pulling feathers she isn't attracted
A cock bird is usually slightly larger than a hen (depending on the strain of bird). A male will spread it's tail feathers and drag them across the ground/floor when he is chasing after his female to go to nest. Females also spread their tail feathers, but they don't drag the feathers across the floor. Males make a distinctive "cooing" sound (more so than females). When eggs are present, males incubate during the day, females at night (they take 12-hour shifts). Males care for their squeakers once they leave the nest, while the female goes to nest again. Males tend to "defend" their perch space(s) more than females do (females just fly away). The top of a male's head is "flat" whereas a female's is rounded. Females just look more feminine than males do when looking at them as a whole.
Female peacocks have feathers, too - its just that the males have the most brilliantly colored. Males only have the beautiful feathers because they are used to attract females. Since females do not need to attract males, they do not need brilliantly colored feathers.
how the feathers protect the bird
As far as we know, there is no bird living without feathers.
Canaries are not sexually dimorphic. They look the same as the males.
how the feathers protect the bird
It will not be able to fly with no feathers. Feathers keep a bird warm. If its feathers are gone it will die of cold. Most importantly feathers help a bird to escape from predators.
Another name for bird feathers is down.