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Avian mud nest architecture by self-secreted saliva

Title
Avian mud nest architecture by self-secreted saliva
Authors
Jung, YeonsuJung, SohyunLee, Sang-imKim, WonjungKim, Ho-Young
DGIST Authors
Lee, Sang-im
Issue Date
2021-01
Citation
Proceedings of the National Academy of Sciences of the United States of America, 118(3), e201850911
Type
Article
Article Type
Article
Author Keywords
bird nestgranular materialsanimal architecturepolymer adhesion3D printing
Keywords
FRACTURELIQUID
ISSN
0027-8424
Abstract
Mud nests built by swallows (Hirundinidae) and phoebes (Sayornis) are stable granular piles attached to cliffs, walls, or ceilings. Although these birds have been observed to mix saliva with incohesive mud granules, how such biopolymer solutions provide the nest with sufficient strength to support the weight of the residents as well as its own remains elusive. Here, we elucidate the mechanism of strong granular cohesion by the viscoelastic paste of bird saliva through a combination of theoretical analysis and experimental measurements in both natural and artificial nests. Our mathematical model considering the mechanics of mud nest construction allows us to explain the biological observation that all mud-nesting bird species should be lightweight. © 2021 National Academy of Sciences. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/12950
DOI
10.1073/pnas.2018509118
Publisher
National Academy of Sciences
Related Researcher
Files:
There are no files associated with this item.
Collection:
Department of New BiologyLab of Integrative Animal Ecology1. Journal Articles


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