Effect of brood size on food provisioning rate in Common Kingfishers Alcedo atthis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F17%3A10369601" target="_blank" >RIV/00216208:11310/17:10369601 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.5253/arde.v105i1.a3" target="_blank" >http://dx.doi.org/10.5253/arde.v105i1.a3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5253/arde.v105i1.a3" target="_blank" >10.5253/arde.v105i1.a3</a>

Result language

angličtina

Original language name

Effect of brood size on food provisioning rate in Common Kingfishers Alcedo atthis

Original language description

We measured food provisioning to broods of Common Kingfishers Alcedo atthis. We collected regurgitated undigested fish remains from artificial nests. Using artificial nests ensured that fish remains originated from the current nesting period and were not a result of multiple use of a nest within one breeding season or between seasons. In total, 4722 specimens of 24 fish species were identified in six nests; the remains were used to estimate the mass of individual fish prey. Chicks were fed with fish weighing between 0.01 and 16.2 g (average: 3.0 g, median: 2.6 g). Provisioning rate significantly increased with increasing brood size from 1498 g (505 fishes for four nestlings) to 2968 g (894 fishes for eight nestlings). During the fledging period each chick consumed on average 334 g of fish, which resulted in an estimated daily food intake of 37% of the chick&apos;s body mass (average over the entire nestling period). The average daily energy intake was 73.5 kJ per chick, which was lower than expected for birds of equivalent size. It seems that the relatively low energy requirement of chicks, in conjunction with selecting for large and energy-rich prey, are the key factors enabling Common Kingfishers to have large and multiple broods during one breeding season. In the temperate zone of continental Europe, this reproductive strategy enables the species to compensate for the mortality caused by periodically severe winters.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10618 - Ecology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

Ardea

ISSN

0373-2266

e-ISSN

—

Volume of the periodical

105

Issue of the periodical within the volume

1

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

5-17

UT code for WoS article

000407666200002

EID of the result in the Scopus database

2-s2.0-85019431944