Uria lomvia, commonly known as the Thick-billed Murre, is a type of bird that belongs to the Alcidae family. It is known for its distinctive, thick bill that makes it easy to identify. Other names that are commonly used to refer to this bird include Brunnich's guillemot, Arctic guillemot, and tystie. These synonyms are used interchangeably with Uria lomvia, depending on location and culture. The bird is found in the northern hemisphere and is known for its excellent diving abilities, making it a keen underwater hunter. Its thick, waterproof feathers help it in this pursuit. Overall, Uria lomvia is a fascinating and impressive bird species.