[Enge2005]
Engelbrech, D. (2005).
Breeding biology of the eastern population of the short-clawed lark
in South Africa.
Ostrich, 76(3/4): 1:54–161. doi:10.1080/00306525.1988.9633924.
[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.