Little Grebe apparently imprinted upon female Mallard On 16th, 17th and 19th September 1986, at Marshside lagoons, Southport, Lancashire, I watched a juvenile Little Grebe Tachybaptus ruficollis constantly accompanying a female Mallard Anas platyrhynchos. At first, I thought that there was a simple commensalism, with the Mallard up-ending and the grebe taking advantage of the food disturbed. The g...

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