- [Wiki]
http://en.wikipedia.org/wiki/Empidonax_virescens.
- [AnAge]
http://genomics.senescence.info/species/entry.php?species=Empidonax_virescens.
- [avibase]
https://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=2778A3F42BBFEBD5&sec=lifehistory.
- [Kooy2010]
Kooijman, S. (2010).
Dynamic Energy Budget theory for metabolic organisation.
Cambridge Univ. Press, Cambridge.
- [Mumf1964]
Mumford, R. E. (1964).
The breeding biology of the acadian flycatcher.
Technical report, Univ. Michegan, Museum of Zoology.
- [PrinPres1991]
Prinzinger, R., A.Preßmar, and Schleucher, E. (1991).
Body temperature in birds.
Comp. Biochem. Physiol., 99A(4):499--506. doi:10.1016/0300-9629(91)90122-S.