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

被引:41
作者
Biddle, Lucia E. [1 ]
Deeming, D. Charles [1 ]
Goodman, Adrian M. [1 ]
机构
[1] Lincoln Univ, Sch Life Sci, Joseph Banks Labs, Lincoln LN6 7DL, England
关键词
LATITUDINAL VARIATION; BLUE TIT; TEMPERATURE;
D O I
10.1080/00063657.2014.988119
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
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 recognize the structural properties of these materials. Materials on the outside of the nest may have a key structural role during construction.
引用
收藏
页码:87 / 95
页数:9
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