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Avian mud nest architecture by self-secreted saliva
- Title
- Avian mud nest architecture by self-secreted saliva
- Authors
- Jung, Yeonsu; Jung, Sohyun; Lee, Sang-im; Kim, Wonjung; Kim, 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 nest; granular materials; animal architecture; polymer adhesion; 3D printing
- Keywords
- FRACTURE; LIQUID
- 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
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Lee, Sang-im
Lab of Integrative Animal Ecology
-
Research Interests
- Files:
There are no files associated with this item.
- Collection:
- Department of New BiologyLab of Integrative Animal Ecology1. Journal Articles
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