Our Greater Honeyguides killing their Little Bee-eater hosts star in the ‘Sex, Lies and Dirty Tricks’ episode of BBC Natural History Unit’s “World’s Sneakiest Animals” TV series, presented by Chris Packham. The first broadcast is at 20h00 on 14 January 2015, on BBC Two. The Natural History Unit team visited us in Zambia in October 2014 to film, ably facilitated in the field by Jeroen Koorevaar and Nicholas Horrocks.
Our paper ‘Why and how to apply Weber’s Law to coevolution and mimicry’ has been published in the journal Evolution. This perspectives paper, written by Tanmay Dixit, Eleanor Caves, Claire Spottiswoode, and Nicholas Horrocks, argues that Weber’s Law of proportional processing can lead to otherwise counterintuitive predictions about the evolutionary trajectories of mimicry systems. Weber’s Law states that when the magnitude of a stimulus is large, it is more difficult to discriminate a change or difference from that stimulus. In other words, relative differences are more salient than absolute differences. We show that Weber’s Law could have implications for mimicry: when stimulus magnitudes are high, it should be more difficult to discriminate a model from a mimic. This leads to testable predictions about evolutionary trajectories of models and mimics. We also present a framework for testing Weber’s Law and its implications for coevolution.