• [Wiki] http://en.wikipedia.org/wiki/Passer_domesticus.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Passer_domesticus.
• [KillKara2012] Killpack, T. L. and Karasov, W. H. (2012). Growth and development of house sparrows (Passer domesticus) in response to chronic food restriction throughout the nestling period. The Journal of Experimental Biology, 215:1806--1815.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [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.