NDLI: Social foraging and habitat use by a long-distance passerine migrant, Whinchat Saxicola rubetra, at a spring stopover site on the SE Adriatic coast

Content Provider	Springer Nature Link
Author	Koce, Urša Denac, Damijan
Copyright Year	2010
Abstract	The preference for foraging in groups and the effect of physiognomic factors of a habitat on its use by foraging Whinchats (Saxicola rubetra) was studied during spring migration stopover in a mosaic cultural landscape at the SE Adriatic coast. Every record of spatially distinct Whinchats, either a solitary individual or a group, was referred to as a Whinchat unit. The units were classified as intensively foraging, less intensively foraging or non-foraging and divided into four size classes. The effect of physiognomic habitat factors on use of habitat by foraging Whinchat units was modelled. All possible additive models using logit link function were constructed from five independent physiognomic variables: (1) natural perches (NP), (2) artificial perches (AP), (3) high herbal vegetation (HHV), (4) open bushes (OB) and (5) heterogeneity of vegetation types (HVT). Variables HHV and OB were included simultaneously in the models. Models that were substantially supported by the data were selected according to second order Akaike’s information criterion AICc. Two such models contained variable(s) (1) NP and (2) NP + AP. The relative importance weights of physiognomic variables NP, AP, HVT, HHV and OB were 1, 0.38, 0.24, 0.13 and 0.13, respectively. Perches were thus the most important physiognomic habitat factor affecting habitat use by Whinchats in a mosaic cultural landscape. The great majority of Whinchats foraged in groups and the proportion of intensively foraging Whinchat units increased with unit size, leading to the conclusion that Whinchats preferred social to solitary foraging on the spring stopover at the SE Adriatic coast.
Starting Page	655
Ending Page	663
Page Count	9
File Format	PDF
ISSN	00218375
Journal	Journal für Ornithologie
Volume Number	151
Issue Number	3
e-ISSN	14390361
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-03-04
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Whinchat (Saxicola rubetra) Spring migration Social foraging Habitat use Effect of physiognomic habitat factors Evolutionary Biology Animal Ecology Zoology
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology

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