Are great tits (Parus major) really optimal foragers?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077395%3A_____%2F03%3A60033052" target="_blank" >RIV/60077395:_____/03:60033052 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12310/03:00004695

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Are great tits (Parus major) really optimal foragers?

Original language description

In this study, we test the classical prey model of optimal-foraging theory with great tits (Parus major) feeding on two types of mealworms presented on a conveyor belt. Contrary to the results of some previous experiments, prey types were given to birdsin random order, therefore birds could not predict their next prey item. We tested birds' diet choices at four different prey-encounter rates. Our results show that in 95% of cases great tits consumed the more profitable prey type upon encounter. On theother hand, consumption of the less profitable prey type did not differ statistically from the 'always-attack' strategy in 77% of cases when the rate of encounter with the more profitable prey was below a critical value, and did differ from that strategyin 67% of cases when the rate of encounter with the more profitable prey was above that critical value. Contrary to predictions of the classical prey model of optimal-foraging theory, our birds never completely excluded the less profitab

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EG - Zoology

OECD FORD branch

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Project

<a href="/en/project/IAA6007303" target="_blank" >IAA6007303: Habitat selection by prodators: the effect of competition</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2003

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Canadian Journal of Zoology-Revue Canadienne de Zoologie

ISSN

0008-4301

e-ISSN

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Volume of the periodical

81

Issue of the periodical within the volume

N/A

Country of publishing house

CA - CANADA

Number of pages

9

Pages from-to

780-788

UT code for WoS article

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EID of the result in the Scopus database

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