To successfully navigate their world, organisms rely on numerous senses. Birds are no exception to this; and yet, for a long time, people have been convinced that birds cannot smell. This came as a surprise to evolutionary biologist Danielle J. Whittaker. Given that smell is effectively chemoreception (the sensing of chemical gradients in your environment) and was one of the first senses to evolve, why would birds have no use for it? The Secret Perfume of Birds tells the story of 15 years spent investigating the olfactory capabilities of birds and provides an insider’s account of scientific research.
Here is a strange question: does the sight of a peacock’s tail make you sick? Well, it did have this effect on Charles Darwin. The reason was perhaps more cerebral than anything else. With A Taste for the Beautiful: The Evolution of Attraction, professor in animal behaviour Michael J. Ryan gives a superbly readable and accessible account of his and other’s studies that address how sexual beauty comes about, and why we see such a bewildering diversity of traits used in mate choice.
We biologists are a moody bunch, aren’t we? Forever lamenting the loss of biodiversity and unspoiled wild nature around us as humanity transforms the planet. The Anthropocene, the sixth extinction – I dare say you could accuse us of a certain doom-mongering. We ought to present a united front to the many threats unscrupulous groups in the outside world throw at our precious wildlife. So, beware the biologist that breaks rank and suggests a different narrative – he or she can expect a healthy amount of criticism. So it was with Chris D. Thomas’s recent book Inheritors of the Earth: How Nature is Thriving in an Age of Extinction (read my interview with him over at my employer’s blog The Hoopoe). And so it is with Menno Schilthuizen’s new book Darwin Comes to Town: How the Urban Jungle Drives Evolution. You leave it to us pragmatic Dutch to say out loud the things you don’t like to hear…
I have to preface this review by pointing out that I did not read this book from a fully neutral position. Gil Rosenthal, a professor in biology, ecology and evolutionary biology at Texas A&M University, does mate choice research on fish. So did I. Though he works on live-bearing swordtails and I worked on threespine sticklebacks, some of the work he discusses has been written by people I knew personally as supervisor, co-workers or colleagues. Many more publications referenced are ones I also read during the course of my PhD research. You could say that mate choice research is a field I am, errr, intimately familiar with. At least where fish are concerned. At the same time, I left academia after graduating in 2010, so this book seemed like a good opportunity to get back in touch with this research field.