"the rooks circled and cawed in the golden sky"
Creative Commons AttributionRook - Credit: ufopilot

Rooks, along with other members of the corvid family, are considered to be birds of ill omen and their presence strikes a note of unease in this otherwise welcoming scene. Their diet of carrion and their predeliction for haunting sites of slaughter means that they are strongly associated with death. Often they will circle ailing prey as though predicting its imminent demise. Their flocking about Bly heralds the catastrophes to come.