Little Grebe apparently imprinted on female Mallard. With reference to the note on a juvenile Little Grebe Tachybaptus ruficollis apparently imprinted on a female Mallard Anas platyrhynchos [Brit. Birds 82: 116), might it not be that the Mallard hatched the grebe egg, hence her apparently swimming 'aimlessly' (i.e. only to human eyes) and her avoiding flight? Her behaviour appears to be pretty

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