喙是鸟类的重要器官。 不同的鸟拥有不同形态的喙，应对的是他们不同的功能。 为什么同样是鸟，在不同种类之间喙的区别这么大？除了吃东西以外，还有其他的功能么？为什么有时候会看到有的鸟的喙长得非常异于常鸟？在本期内容， 我们来说说鸟喙的进化与功能，当然还有一些小知识。
图片来源：晒宁鼻涕（小红书：晒宁鼻涕）栗臀䴓
图片来源：Martin Renner 黑顶山雀
图片来源：网络 短嘴鸦
感谢JackieMei这位朋友给我们的赞赏。 如果您喜欢我们的节目，也请您多多评论，转发给更多喜欢观鸟和自然的朋友。 有任何的意见，建议，或者也想参与到我们的节目中来， 可以直接给我们发邮件。再次感谢各位朋友的收听。 我们下期再见！
参考文献
Evolution of a multifunctional trait: shared effects of foraging ecology and thermoregulation on beak morphology, with consequences for song evolutionNicholas R. Friedman, Eliot T. Miller, Jason R. Ball, Haruka Kasuga, Vladimír Remeš† and Evan P. Economo†Published:18 December 2019 doi.org
A Beak Boom Millions of Years Ago Created the Diversity of Bird Bills We Know Today
Warmer World, Bigger Beaks
Geographical variation in bill size across bird species provides evidence for Allen's ruleMatthew R E Symonds 1, Glenn J Tattersall DOI: 10.1086/653666
Heat Exchange from the Toucan Bill Reveals a Controllable Vascular Thermal RadiatorGlenn J. Tattersall, Denis V. Andrade, and Augusto S. AbeScience 24 Jul 2009 Vol 325, Issue 5939 pp. 468-470 DOI: 10.1126/science.1175553
Epizootic of Beak Deformities Among Wild Birds in Alaska: An Emerging Disease in North America?Colleen M. Handel, Lisa M. Pajot, Steven M. Matsuoka, Caroline Van Hemert, John Terenzi, Sandra L. Talbot, Daniel M. Mulcahy, Carol U. Meteyer, Kimberly A. TrustThe Auk. 127(4):882-898 (2010). doi.org
Environmental contaminants and chromosomal damage associated with beak deformities in a resident North American passerineColleen M. Handel, Caroline Van HemertFirst published: 05 November 2014 doi.org
Novel Picornavirus Associated with Avian Keratin Disorder in Alaskan BirdsAuthors: Maxine Zylberberg, Caroline Van Hemert, John P. Dumbacher, Colleen M. Handel, Tarik Tihan, Joseph L. DeRisi DOI: doi.org
What’s Got Bird Beaks in a Twist?
