Prompt: Imagine a raven perched on a tree branch, its black feathers glistening in the light. The raven might be delicately holding an hourglass in its beak, as if watching time pass. The expression in its eyes could reflect a kind of wisdom or contemplation of the passage of time. The hourglass could have an ancient appearance, with golden sand flowing slowly from one half to the other. The grains of sand could evoke symbolic elements such as time, memory or the passing of life.