Water Regurgitation by Adult Double-crested Cormorants: A Possible Mechanism to Assist in Chick Thermoregulation

D. Tommy King; Jennifer E. Chastant

doi:10.1675/1524-4695(2008)31[283:WRBADC]2.0.CO;2

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D. Tommy King,¹ Jennifer E. Chastant²

¹USDA/APHIS/WS, National Wildlife Research Center, P.O. Box 6099, Mississippi State, MS 39762, USA Tommy.King@aphis.usda.gov
²Department of Wildlife and Fisheries, Box 9690, Mississippi State University, Mississippi State, MS 39762, USA

Abstract

A previously undocumented thermoregulatory behavior of adult cormorants for their pre-fledged young was recorded during observations of a Double-crested Cormorant (Phalacrocorax auritus) colony in Lake of the Woods, Ontario. Many adult cormorants were observed regurgitating water over their chicks’ bodies. The authors believe that the warm temperature, intense sun, and calm winds during the observation periods were the primary factors triggering this previously undocumented thermoregulatory behavior.

Citation Download Citation

D. Tommy King and Jennifer E. Chastant "Water Regurgitation by Adult Double-crested Cormorants: A Possible Mechanism to Assist in Chick Thermoregulation," Waterbirds 31(2), 283-284, (1 June 2008). https://doi.org/10.1675/1524-4695(2008)31[283:WRBADC]2.0.CO;2

Received: 16 May 2007; Accepted: 1 September 2007; Published: 1 June 2008

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