Cockle-opening by a Dabbling Duck, the Brown Teal

Suzanne J. Moore; Phil F. Battley

doi:10.1675/1524-4695(2003)026[0331:CBADDT]2.0.CO;2

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Suzanne J. Moore,¹ Phil F. Battley²

¹Ecology Group, Massey University, Private Bag 11 222, Palmerston North, New Zealand suzimoore@yahoo.com
²Royal Netherlands Institute for Sea Research (NIOZ), P.O. Box 59, 1790 AB, Den Burg, Texel, The Netherlands

Abstract

Many birds feed on bivalve molluscs, but only oystercatchers (Haematopus spp.) are known to prise open the shells. Brown Teal (Anas chlorotis), a dabbling duck endemic to New Zealand, were observed opening Common Cockles (Austrovenus stutchburyi) on Great Barrier Island. The teal jackhammered into the open shells of feeding cockles and quickly scooped out the flesh. Despite having the bill morphology of a typical dabbling duck, they were adept at this feeding method.

Citation Download Citation

Suzanne J. Moore and Phil F. Battley "Cockle-opening by a Dabbling Duck, the Brown Teal," Waterbirds 26(3), 331-334, (1 September 2003). https://doi.org/10.1675/1524-4695(2003)026[0331:CBADDT]2.0.CO;2

Received: 31 October 2002; Accepted: 1 February 2003; Published: 1 September 2003

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