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Signals of need in parent–offspring communication and their exploitation by the common cuckoo

Author

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  • R. M. Kilner

    (University of Cambridge)

  • D. G. Noble

    (University of Cambridge)

  • N. B. Davies

    (University of Cambridge)

Abstract

Nestling birds present vivid gapes and produce loud calls as they solicit food, but the complexity of the display is poorly understood. Here we explain the function of reed warbler begging signals and show how they are exploited by the common cuckoo, Cuculus canorus, a brood parasite. Reed warbler parents integrate visual and vocal signals from their young to adjust their provisioning rates, and the two signals convey more accurate information about offspring need than either does alone. The cuckoo chick has a particularly striking begging display which has been suggested to be irresistible to host parents. However, we show that the cuckoo, reared alone in the nest, presents a deficient visual display, and elicits the same amount of care as a reed warbler brood only by compensating with its exaggerated vocal display. Therefore the cuckoo succeeds not through mimicry of the host brood begging signals, but by tuning into the sensory predispositions of its hosts.

Suggested Citation

  • R. M. Kilner & D. G. Noble & N. B. Davies, 1999. "Signals of need in parent–offspring communication and their exploitation by the common cuckoo," Nature, Nature, vol. 397(6721), pages 667-672, February.
    • Handle: RePEc:nat:nature:v:397:y:1999:i:6721:d:10.1038_17746
    DOI: 10.1038/17746
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    Cited by:

    1. Miguel A. Rodriguez-Girones & Magnus Enguist & Michael Lachmann, 2001. "The Role of Begging and Sibling Competition in Foraging Strategies of Nestlings," Working Papers 01-01-002, Santa Fe Institute.
    2. Ariane Mutzel & Anne-Lise Olsen & Kimberley J Mathot & Yimen G Araya-Ajoy & Marion Nicolaus & Jan J Wijmenga & Jonathan Wright & Bart Kempenaers & Niels J Dingemanse, 2019. "Effects of manipulated levels of predation threat on parental provisioning and nestling begging," Behavioral Ecology, International Society for Behavioral Ecology, vol. 30(4), pages 1123-1135.

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