NDLI: Hopeless solicitation? Host-absent vocalization in the common cuckoo has no effect on feeding rate of reed warblers

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Hopeless solicitation? Host-absent vocalization in the common cuckoo has no effect on feeding rate of reed warblers

Content Provider	Springer Nature Link
Author	Šicha, Václav Procházka, Petr Honza, Marcel
Copyright Year	2006
Abstract	Begging behavior of nestlings can signal both hunger and competitive ability. Studies of begging in evicting avian brood parasites exclude the influence of nestling competition and may provide new insights into the host–parasite conflict and the evolution of signaling. Apart from the begging call, common cuckoo Cuculus canorus nestlings use special vocal displays in the absence of their hosts, termed here host-absent vocalization (HAV). Since these conspicuous calls can increase the risk of predation and require energy, their costs should be balanced by some benefits, such as increased food provisioning. However, there has been no evidence that chicks convey information about their hunger by HAV. We therefore tested experimentally whether cuckoo chicks use HAV as an additional signal to enhance food-delivery rate by their hosts. We used playback of HAV recorded from cuckoo nestlings to determine whether their hosts, reed warblers Acrocephalus scirpaceus, increase their provisioning in response to an apparent increase in HAV. Older chicks spent more time in HAV than younger chicks, suggesting that HAV is not caused by inaccurate discrimination of host arrival stimuli. Negative correlation of HAV with feeding rate and mass gain between the two experiments suggested that hunger was the motivation of HAV. The playback experiment, however, did not prove that HAV affects host provisioning rate. We discuss possible reasons for this result and provide alternative explanations for HAV, such as creating a bond between the hosts and the parasitic young used later in the postfledging care.
Starting Page	147
Ending Page	152
Page Count	6
File Format	PDF
ISSN	02890771
Journal	Journal of Ethology
Volume Number	25
Issue Number	2
e-ISSN	14395444
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-09-02
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Acrocephalus scirpaceus Begging Brood parasitism Cuckoo Cuculus canorus Food provisioning Reed warbler Vocalization Neurosciences Evolutionary Biology Animal Ecology Behavioural Sciences Zoology
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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Data from: No immediate or future extra costs of raising a virulent brood parasite chick (Dataset)

Great reed warbler Acrocephalus arundinaceus and reed warbler Acrocephalus scirpaceus respond differently to cuckoo dummy at the nest

Host nest defense against a color-dimorphic brood parasite: great reed warblers (Acrocephalus arundinaceus) versus common cuckoos (Cuculus canorus)

Environmental conditions influence egg color of reed warblers Acrocephalus scirpaceus and their parasite, the common cuckoo Cuculus canorus

Breeding success of a brood parasite is associated with social mating status of its host

Data from: Brood parasites lay eggs matching the appearance of host clutches (Dataset)

Choosing suitable hosts: common cuckoos Cuculus canorus parasitize great reed warblers Acrocephalus arundinaceus of high quality

Egg laying behavior of the common cuckoo (Cuculus canorus): data based on field video-recordings (Dataset)

First evidence of regular common cuckoo, Cuculus canorus, parasitism on eastern olivaceous warblers, Hippolais pallida elaeica

Hopeless solicitation? Host-absent vocalization in the common cuckoo has no effect on feeding rate of reed warblers

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