What Does an American Crow Look Like ... Crows can measure up to 20 inches from their large, thick beak to their tail, and they can weigh as much as 20 ounces. It’s nearly impossible to tell ...

“normal” beaks (examples shown of a petrel and a gull) and a bird with a tactile bill-tip organ (a tinamou, close relative of ostriches and emus and which has an ancestral bill-tip organ ...