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. 2019 Dec 5;10:1206. doi: 10.3389/fgene.2019.01206

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Copyright © 2019 Torres-Vanegas, Hadley, Kormann, Jones, Betts and Wagner

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Inflorescence of Heliconia tortuosa. Focus on a single red bract subtending a curved and tubular yellow flower. (B) A territorial rufous tailed hummingbird (Amazilia tzacatl). (C) A traplining violet sabrewing hummingbird (Campylopterus hemileucurus). Photo credits: Felipe Torres-Vanegas (A), Matthew G. Betts (B), and Urs G. Kormann (C).