it can fly but not as well because of the extra weight.
yes
the tail has flight feathers and the flight feathers help a bird to fly.
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.
there is no such thing there is no bird that is not a bird even if it doesn't act like a bird
fly
Birds can fly because they light feathers &they do not have bone marrow
Most people believe that birds waterproof their feathers by the oil located on their backs but that is not how they waterproof it. The interlocking hooks and barbules on feathers is what makes a bird waterproof and not all bird are waterproof. -Kynlee Bird Expert
It Provides warmth..and allows the bird to fly
Nightingale is a bird because it has all the properties of a bird.It can fly, it has a beak, it has feathers , it is warm blooded and it lays eggs.
An unfledged bird is a young bird that does not have feathers and is not ready to fly. In people, it means immature or inexperienced.
The long stiff flight feathers on a bird's wing are called remiges. They provide the necessary lift and thrust for the bird to fly efficiently.
Birds can fly because they have feathers that enables them to fly. That, and having hollow bones, being lightweight and flapping their wings to propel them through the air.