Discordancy or template-based recognition? Dissecting the cognitive basis of the rejection of foreign eggs in hosts of avian brood parasites.

  title={Discordancy or template-based recognition? Dissecting the cognitive basis of the rejection of foreign eggs in hosts of avian brood parasites.},
  author={Csaba Mosk{\'a}t and Mikl{\'o}s B{\'a}n and Tam{\'a}s Sz{\'e}kely and Jan Komdeur and Rim W G Lucassen and Lotte A van Boheemen and Mark E Hauber},
  journal={The Journal of experimental biology},
  volume={213 11},
Many avian hosts have evolved antiparasite defence mechanisms, including egg rejection, to reduce the costs of brood parasitism. The two main alternative cognitive mechanisms of egg discrimination are thought to be based on the perceived discordancy of eggs in a clutch or the use of recognition templates by hosts. Our experiments reveal that the great reed warbler (Acrocephalus arundinaceus), a host of the common cuckoo (Cuculus canorus), relies on both mechanisms. In support of the discordancy… CONTINUE READING
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