Title:

Food of the red-backed shrike Lanius collurio: a comparison of three methods of diet analysis

Subtitle:

Acta Ornithologica, vol. 38, no. 1 ; Badania składu pokarmu gąsiorka: porównanie wyników uzyskanych metodami analizy pierścieni okołoszyjnych, wyplówek i resztek pokarmowych ; Assessing the red-backed shrike diet

Creator:

Tryjanowski, Piotr ; Karg, Małgorzata K. ; Karg, Jerzy

Contributor:

Polska Akademia Nauk. Muzeum i Instytut Zoologii

Publisher:

Museum & Institute of Zoology

Place of publishing:

Warszawa

Date issued/created:

2003

Description:

Bibliogr. p. 61-62 ; P. [59]-63 : ill. ; 27 cm ; Streszcz. pol. ; Abstract in Polish

Type of object:

Journal/Article

Subject and Keywords:

Red-backed Shrike ; birds ; nutrition ; Poland ; Wielkopolska ; Great Poland (region) ; Turew ; diet analysis ; methods ; shrikes ; Lanius collurio ; Laniidae ; Aves ; 1999-2000

Abstract:

The diet of the Red-backed Shrike (Lanius collurio) was analysed from collars in nestlings, pellets and prey remains in larders. All the material was collected from the same territories in western Poland.A total of 2855 prey items were identified from all the samples. Insects, mainly Coleoptera, Hymenoptera and Orthoptera, constituted 98.9% of all the prey items identified.In order to determine the diet and predict the impact of food resources on Red-backed Shrike populations, three methods should be used together: pellet content analyses, collar sampling and larder analysis. Our findings suggest that pellet content analysis is an easy and non-invasive method for estimating prey diversity and the frequency index. However, collars are necessary to determine nestling diets. Analyses of prey remains in larders should be used to find large prey, handled before consumption. In a more advanced geographical analysis of the content of the shrike diet, we suggest pooling the data obtained by different methods from the same place, and/or carefully assign methods of diet analyses.

Relation:

Acta Ornithologica

Volume:

38

Issue:

1

Start page:

59

End page:

63

Resource type:

Text

Detailed Resource Type:

Article

Format:

application/pdf

Source:

MiIZ PAN, call no. P.257-38-1 ; MiIZ PAN, call no. P.4568-38-1 ; click here to follow the link

Language:

eng

Rights:

Rights Reserved - Restricted Access

Terms of use:

Copyright-protected material. Access only on terminals at the Museum and Institute of Zoology of the Polish Academy of Sciences, may be used within the limits of statutory user freedoms.

Digitizing institution:

Museum and Institute of Zoology of the Polish Academy of Sciences

Original in:

Library of the Museum and Institute of Zoology of the Polish Academy of Sciences

Projects co-financed by:

European Union. European Regional Development Fund ; Programme Innovative Economy, 2010-2014, Priority Axis 2. R&D infrastructure

Access:

Closed