Effects of food provisioning and habitat management on spatial behaviour of Little Owls during the breeding season

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F16%3A00460070" target="_blank" >RIV/68081766:_____/16:00460070 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12310/16:43890905

Result on the web

<a href="http://www.ornisfennica.org/pdf/early/Jacobsen.pdf" target="_blank" >http://www.ornisfennica.org/pdf/early/Jacobsen.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Effects of food provisioning and habitat management on spatial behaviour of Little Owls during the breeding season

Original language description

The population of Little Owls in Denmark is close to extinction. The main cause is food limitation during the breeding season. Efforts to improve breeding success include providing breeding pairs with supplementary food and attempts to improve foraging habitats by creating short grass areas near the nests. In addition to increasing the reproductive output, feeding and habitatmanagementmay cause parents towork less hard improving their future reproductive value. We studied working efforts of five radio-tagged Little Owl pairs in years of absence and presence of food provisioning, and/or access to short sward vegetation areas near to the nest.We quantifiedmovement as theminimumflight distance hour–1 (MFD), using themean distance from the nest (DN) as a supplementary index. Under unmanipulated conditions, males had higher MFD and DN than females. If providednwith food and/or areas with short sward vegetation, males but not females reduced their MFD and DN significantly. If MFD was adjusted for DN (the two measures correlated positively), both sexes reduced their DN-adjusted MFD as response to food provisioning but not to habitat provisioning. Food provisioning therefore had similar proximate effects on the foraging effort ofmales and females, whereas provisioning of short sward habitats had an indirect effect onmale but not female MFD, because of decreased commuting distances between nest and foraging sites. The results indicate that food provisioning not only leads to increased reproductive output in an endangered raptor, but also to decreased working effort, which in turn may improve adult survival.

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

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Ornis Fennica

ISSN

0030-5685

e-ISSN

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Volume of the periodical

93

Issue of the periodical within the volume

2

Country of publishing house

FI - FINLAND

Number of pages

9

Pages from-to

121-129

UT code for WoS article

000378757700005

EID of the result in the Scopus database

2-s2.0-84976444926