Morphology and biomechanics of the nests of the Common Blackbird Turdus merula

Biddle, Lucia and Deeming, Charles and Goodman, Adrian (2015) Morphology and biomechanics of the nests of the Common Blackbird Turdus merula. Bird Study, 62 (1). ISSN 0006-3657

Documents
#189 Biddle et al. on-line.pdf
[img]
[Download]
[img]
Preview
PDF
#189 Biddle et al. on-line.pdf - Whole Document

365kB
Item Type:Article
Item Status:Live Archive

Abstract

Capsule Common blackbirds select different materials, with varying biomechanical properties, to construct different parts of their nest.
Aims This study tested the hypothesis that outer components of a nest have a more structural role and so are stronger than materials used to line the cup.
Methods Blackbird nests were measured prior to being dismantled to isolate structural components which were tested for mechanical strength and rigidity.
Results Outer nest wall materials were significantly thicker, stronger and more rigid than materials in the inner structural wall or the cup lining. In the vertical plane materials used in the structural wall did not differ. By contrast, lining materials from the bottom of the nest cup were significantly thicker, stronger and more rigid than materials from the top of the cup.
Conclusion Blackbirds use different materials in nest construction roles suited to their properties and so may be able to recognise the structural properties of these materials. Materials on the outside of the nest may have a key structural role during construction.

Keywords:strength, rigidity, plant stem, plant root, bmjgoldcheck, NotOAChecked
Subjects:C Biological Sciences > C142 Reproductive Biology
Divisions:College of Science > School of Life Sciences
ID Code:16289
Deposited On:16 Dec 2014 17:00

Repository Staff Only: item control page