The rich bird life of the North, distributed over widely varying habitats, displays a diversity seldom surpassed in Iceland. Wetlands are important as a habitat for many Icelandic breeding species, and of the Icelandic wetlands which are famed for rich bird life, several of the most renowned are in North Iceland.
Mývatn lake and the nearby Laxá river are home to more duck species than any other place in the world, while examples of other wetlands include Svarfaðardalur and the islets at the mouth of Eyjafjarðará. Some well-known bird cliffs are located in the North, such as at Grímsey, Rauðinúpur and Langanes, besides the islands of Lundey in Skjálfandi and Mánáreyjar just eastwards, with their large puffin colonies. The seaward end of the peninsula off which these islands lie, Tjörnes, has abundant puffins at points where it is easy to approach and observe them.