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Keywords: cormorant
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Journal Articles
J Exp Biol (2008) 211 (6): 866–872.
Published: 15 March 2008
... (affecting apparent prey size) and of low-level water turbidity in hand-reared great cormorants ( Phalacrocorax carbo sinensis ) diving for natural prey (fish) in a forced-choice situation. The cormorants'detection of underwater prey relied on vision. The minimal tested subtending visual angle of the prey...
Journal Articles
Journal Articles
J Exp Biol (2004) 207 (12): 2101–2114.
Published: 15 May 2004
...Gal Ribak; Daniel Weihs; Zeev Arad SUMMARY Buoyancy is a de-stabilizing force for diving cormorants that forage at shallow depths. Having to counter this force increases the cost of transport underwater. Cormorants are known to be less buoyant than most water birds but are still highly buoyant (ρ...
Journal Articles
J Exp Biol (2000) 203 (24): 3727–3731.
Published: 15 December 2000
...A. Ancel; L. N. Starke; P. J. Ponganis; R. Van Dam; G. L. Kooyman ABSTRACT The energy requirements of Brandt’s cormorants ( Phalacrocorax penicillatus ) during surface swimming were measured in birds swimming under a metabolic chamber in a water flume. From the oxygen consumption recordings, we...
Journal Articles
J Exp Biol (1997) 200 (1): 149–154.
Published: 1 January 1997
...A. Ancel; M. Horning; G. L. Kooyman ABSTRACT We examined the accuracy of both stomach and oesophagus temperature sensors – deployed on captive Brandt’s cormorants – for determination of the mass of food ingested and the number of prey items swallowed. The oesophageal temperature sensor was a better...
Journal Articles
J Exp Biol (1994) 189 (1): 105–115.
Published: 1 April 1994
...David J. H. Grémillet; Andrea L. Plös ABSTRACT We present a new method of measuring the food intake in cormorants based on stomach temperature recordings. Stomach temperature loggers were deployed both in captive and in free-living birds. We examine the accuracy of this method and compare...