Greater honeyguide chick attacking a little bee-eater hatchling.
Source: Claire N. Spottiswoode, Jeroen Koorevaar. A stab in the dark: chick killing by brood parasitic honeyguides. Published September 7, 2011. DOI: 10.1098/rsbl.2011.0739
Textbook Reference: Choosing the Correct Host, p. 435