[46] P.A.P. Moran. The statistical processes of evolutionary theory . Clarendon Press, 1962. 

[47] Steven Hamblin and Peter L. Hurd. Genetic algorithms and non-ESS solutions to game theory models. Animal Behaviour , 74:1005–1018, 2007. 

[48] Arend Hintze, Randal S. Olson, Christoph Adami, and Ralph Hertwig. Risk aversion as an evolutionary adaptation. arXiv e-print. http://arxiv.org/abs/1310.6338, 2014. 

[49] Alex Sansom, Will Cresswell, Jeroen Minderman, and Johan Lind. Vigilance bene- fits and competition costs in groups: do individual redshanks gain an overall foraging benefit? Animal Behaviour , 75:1869–1875, 2008. 

[50] Daniel J Rankin, Katja Bargum, and Hanna Kokko. The tragedy of the commons in evolutionary biology. Trends in Ecology & Evolution , 22:643–651, 2007. 

[51] Tom Wenseleers and Francis LW Ratnieks. Tragedy of the commons in Melipona bees. Proceedings of the Royal Society B , 271:S310–S312, 2004. 

[52] Eben Goodale, Sarath W Kotagama, and RL Holberton. Alarm calling in Sri Lankan mixed-species bird flocks. The Auk , 122:108–120, 2005. 

[53] Hari Sridhar, Guy Beauchamp, and Kartik Shanker. Why do birds participate in mixed- species foraging flocks? A large-scale synthesis. Animal Behaviour , 78:337–347, 2009. 

[54] Peter A Abrams. Life history and the relationship between food availability and foraging effort. Ecology , pages 1242–1252, 1991. 

[55] Jens Krause and Jean-Guy J. Godin. Influence of prey foraging posture on flight behav- ior and predation risk: predators take advantage of unwary prey. Behavioral Ecology , 7:264–271, 1996. 

[56] Steven L. Lima and Peter A. Bednekoff. Back to the basics of antipredatory vigilance: can nonvigilant animals detect attack? Animal Behaviour , 58:537–543, 1999. 

