What kind of expression is a blushing crow?

The phrase "blushing crow" is often used to describe someone who is embarrassed or feels guilty—essentially, it refers to a person displaying an unexpected vulnerability or shame, much like a crow that is not typically associated with such emotions. In literature and colloquial speech, it evokes an image of an animal known for its cunning and intelligence suddenly revealing a more human-like emotion. This expression highlights the contrast between the expected demeanor of a crow and the human experience of embarrassment.