• [Wiki] http://en.wikipedia.org/wiki/Calandrella_cinerea.
• [avibase] https://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=FCDA4F09DBE8C52F&sec=lifehistory.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [NditBaka2017] Ndithia, H. K., Bakari, S. N., Matson, K. D., Muchai, M., and Tieleman, B. I. (2017). Geographical and temporal variation in environmental conditions affects nestling growth but not immune function in a year-round breeding equatorial lark. Frontiers in Zoology, 14:28:1--14. doi:10.1186/s12983-017-0213-1.
• [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.