References

Araya-Salas, M., & Wright, T. (2013). Open-ended song learning in a hummingbird. Biology Letters, 9(5).


Christopher Petkov and Erich Jarvis - Petkov, CI; Jarvis ED (2012). "Birds, primates, and spoken language origins: behavioral phenotypes and neurobiological substrates". Front. Evol. Neurosci. 4:12.


González, C., & Ornelas, J. F. (2014). Acoustic Divergence with Gene Flow in a Lekking Hummingbird with Complex Songs. PLoS ONE, 9(10), e109241.


Jarvis, E. D., Ribeiro, S., da Silva, M. L., Ventura, D., Vielliard, J., & Mello, C. V. (2000). Behaviourally driven gene expression reveals song nuclei in hummingbird brain. Nature, 406(6796), 628-632.


Mello, C. V. and Clayton, D. F. (1995), Differential induction of the ZENK gene in the avian forebrain and song control circuit after metrazole-induced depolarization. J. Neurobiol., 26: 145–161.


Mello, C. V., & Clayton, D. F. (1994). Song-induced ZENK gene expression in auditory pathways of songbird brain and its relation to the song control system. J Neurosci, 14(11 Pt 1), 6652-6666.


Mooney, R. (2009). Neural mechanisms for learned birdsong. Learning & Memory, 16(11), 655-669.

Pacific Southwest Region USFWS. "Anna's Hummingbird." Flickr. Yahoo!, Web. 23 Oct. 2015.

Sandra L. L. Gaunt, Baptista, L. F., Julio E. Sánchez, & Hernandez, D.. (1994). Song Learning as Evidenced from Song Sharing in Two Hummingbird Species (Colibri coruscans and C. thalassinus). The Auk, 111(1), 87–103.

Tinbergen, Niko (1963) "On Aims and Methods of Ethology," Zeitschrift für Tierpsychologie, 20: 410–433