It can mean a lot of things, one it can symbolise that a person has died or is dying inside the house, another is that the residents of the house are cowards (however often the feathers will be white or tipped white), it can also be a symbol of luck or just a really smart crow.
Sending a black feather can mean a great many things. Sometimes sending someone a black feather can mean wishing death on them.
A crow has lost a feather.
bad stuff
A black feather in the mail means loss, illness, and death.You must have caused harm to someone. The black feather is an indicator that you will be receiving "threefold" in return until you make it right. The person that sent the feather seems to have very serious plans to get even.
it means that a bird died.
What does it mean to find a black turtle on your front door iv
It means the feather fairy godmother was out of red lily custom blend top feathers so she left a blue instead.
It means that a black vulture passed flying over the tomb.
it means its bad luck.
Some people believe that seeing a black feather means that you will have good luck or that your guardian angel is close. Some people believe that seeing a black feather is a warning of danger or a sign of something coming up in your life that will be a good change.
It means a blackbird was in the area.
Kuroi hane means black feather. The characters for this is '黒い羽'