I have always had a thing for blackbirds, crows, raven, etc. When I was around ten years old, I got really into Edgar Allan Poe, The Raven, still being among my favorite poems. Birds with black feathers have inspired songs, prose, stories, thoughts, all sorts of stuff. They are ministers of veiled mysteries. Their caws can be disquieting, alarming, eerie, obtrusive, it can quicken us toward all celestial things. They are mischievously brilliant with knife-like beaks and sharps claws. They are witty and quick, unapologetic. Scavengers. Thought to carry omens of illness, misfortune and death.
There is also a great story in Greek mythology where Apollo turns the raven black, it was white before. But when it arrives with bad news Apollo changes the feathers to black.