Sources : Catarrhactes

Aristotle [ca. 350 BCE] (De animalibus Book 9, chapter 12.2): The catarrhactes lives near the sea; when it makes a dive, it will keep under water for as long as it would take a man to walk a furlong; it is less than the common hawk. - [Thompson translation]

Thomas of Cantimpré [circa 1200-1272 CE] (Liber de natura rerum, Birds 5.37): The carchates, as Aristotle says, is a bird that dwells by the sea, and is smaller in size than the hawk. This bird sinks into the water and remains there, before it recovers its breath in the air, as far as a man could walk along a road of one mile. - [Badke translation/paraphrase]