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You are here: Home / Associated publications / Belgian Journal of Zoology / Bibliographic References / Diet composition and prey choice by the red-backed shrike Lanius collurio in western Poland

P Tryjanowski, MK Karg and J Karg (2003)

Diet composition and prey choice by the red-backed shrike Lanius collurio in western Poland

BELGIAN JOURNAL OF ZOOLOGY, 133(2):157-162.

We investigated diet and prey choice in a population of red-backed shrike (Lanius collurio) living in an intensively used farmland (W Poland). Diet was estimated by three methods : collars in nestlings, and pellets and prey remains in larders. Insects, mainly Coleoptera, Hymenoptera and Orthoptera constituted 97.7\% of the diet, with a total of 4392 prey items identified from all samples. However, during rainy and cold days vertebrates formed an important component (up to 26.5\% by biomass) of the food of the red-backed shrike. Food preference - expressed in relation to availability - was estimated for five arthropod taxa. Hymentoptera, Orthoptera and Coleoptera were more preferred prey. Heteroptera and ``other invertebrates'', included mainly flies, dragonflies and spiders were less preferred. For rational management of the red-backed shrike in farmland, we suggest that places with available prey (in appropriate densities), small vegetation patches and perches suited to low-expenditure hunting strategy, Should be preserved, as well as established.

diet; food selection; insects; vertebrates; Lanius collurio
BJZ

ISSN 2295-0451 (online version)
ISSN 0777-6279 (printed version)
impact factor 2015: 0,87.

Editor-in-Chief:
Prof. Dr. Isa Schön
Royal Belgian Institute of Natural Sciences
Vautierstraat 29
1000 Brussels, Belgium

 



1863-1903
Annales de la Société malacologique de Belgique
 
1903-1923
​Annales de la Société royale malacologique et zoologique de Belgique
 
1923-1989
Annales de la Société Royale Zoologique de Belgique
 
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Belgian Journal of Zoology