Behavioural and population responses to changing availability of Artemia prey by moulting black-necked grebes, Podiceps nigricollis

  title={Behavioural and population responses to changing availability of Artemia prey by moulting black-necked grebes, Podiceps nigricollis},
  author={Nico Varo and A. Green and Marta I. S{\'a}nchez and C. Ramo and J. G{\'o}mez and J. Amat},
We examined how availability of brine shrimps, Artemia parthenogenetica, influenced temporal aspects of foraging behaviour and population dynamics of moulting black-necked grebes, Podiceps nigricollis, from late August to early December in four salt ponds in the Odiel marshes, southern Spain, in 2008 and 2009. The moulting grebe population was higher in 2009, coinciding with an increase in shrimp biomass, with a peak of 2,500 birds in October. Grebes increased their time spent foraging as the… Expand

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