I'm not sure If this is what you are asking but they pluck their feathers out because it's like brushing your hair, you purposely don't pull your hair out neither do birds. It can look excessive because it could be when the bird is molting (shedding feathers to make way for new growth) but if the bird starts to develop patches of missing feathers you will need to take it to a vet. That's not how molting works.
Don't ruffle my feathers.
Please dont ruffle my pet doves feathers!
It is interesting to watch a wild turkey ruffle it's feathers.
If you bother a bird, it will ruffle up its feathers in irritation. "Don't ruffle any feathers" is just an idiomatic way of saying "don't annoy anyone" or "don't stir up any trouble."
You ruffle my feathers when you act like that.
Just like humans sweat to cool there body down, birds ruffle their feathers to cool themselves down
The Cockatiel have 10 primary feathers and 10 secondary feathers.
The phrase to ruffle your tail feathers means to annoy someone and get the angry, when a ducks becomes frighted or is bothered it makes itself seem bigger by ruffling its feathers so it puffs up.
No, they aren't blood feathers. If you cut them, it wouldn't hurt, but if you pulled them out, it would.
For birds they ruffle there feathers to make them selves look big and scary to defend them selves from the pretender and try to frighten them away. You wouldn't want to go attack something that looks big and overpowering would you?
למה לפרוע × ×•×¦×•×ª = lama lifroa notsot
It means they have done something that has upset and offended you.