Prinzinger (1974) described and figured an enigmatic 'breast-looking' movement ('das Vor-die-Brust-Schauen') of the Black-necked Grebe Podiceps nigricollis, the function of which he could not determine even though observing it at close range. Shortly after emerging from an underwater dive, individuals of this species were seen to bend the neck slightly backwards and nod the head downwards so that the

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