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2013 California Academy of Sciences   cc-by-nc-sa-3.0

Podiceps auritus (Horned Grebe) is a species of birds in the family grebes. They are listed as vulnerable by IUCN and as endangered by COSEWIC. They are associated with freshwater habitat. They are native to the Palearctic and The Nearctic. They are solitary, diurnal carnivores. Individuals can grow to 65 cm. They have parental care (female provides care, paternal care, and occasionally breeds cooperatively). They rely on drag powered swimming, flight, and swimming to move around.

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  • URI: https://eol.org/schema/terms/drag_based_swimming
  • Definition: Drag swimmers use a cyclic motion where they push water back in a power stroke, and return their limb forward in the return or recovery stroke. When they push water directly backwards, this moves their body forward, but as they return their limbs to the starting position, they push water forward, which will thus pull them back to some degree, and so opposes the direction that the body is heading. This opposing force is called drag. The return-stroke drag causes drag swimmers to employ different strategies than lift swimmers. Reducing drag on the return stroke is essential for optimizing efficiency.
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EOL has data for 49 attributes, including:

Known occurrences, collected specimens and observations of Horned Grebe. View this species on GBIF