Jelmer M. Samplonius, Christiaan Both: Climate Change May Affect Fatal Competition between Two Bird Species. In: Current Biology. Band29, Nr.2, 21. Januar 2019, S.327–331.e2, doi:10.1016/j.cub.2018.11.063.
Jukka T. Forsman u. a.: Observed heterospecific clutch size can affect offspring investment decisions. In: Biology Letters. 8, Nr. 3, 2012, doi:10.1098/rsbl.2011.0970.
