Rapacious birds are predatory birds that feed on other animals, often smaller birds or mammals. The term 'rapacious bird' can refer to three different species: the SHRIKE (6 letters), ERNE (4 letters), and SKUA (4 letters). The SHRIKE is a small passerine bird with a hooked bill and a greyish-brown plumage. The ERNE is a large seabird with a white head and neck, and a black back and wings. The SKUA is a large gull-like bird with a brownish-grey plumage and a hooked bill. All three of these birds are known for their aggressive behavior and their ability to take down prey much larger than themselves.