The phrase "black crows" refers to a group of crows that are black in color. It can also be used metaphorically to describe something negative or ominous.
Sentences with «black crows»
Tabaimo's at once humorous and meditative single - screen video installation hanabi - ra (flower petal) opens with black crows scattering to reveal the nude posterior of a standing man, covered in what appears to be floral tattoos. (jamescohan.com)