I was excited when I first discovered Danielle Whittakers book on avian scent- The Secret Perfume of Birds - in part because I was struck by how little I knew about the subject. There are many myths, old and new, surrounding birds ability, or inability, to smell. This book not only taught me a lot about this subject, but also helped me understand some things about myself and other humans. This book is well written, albeit in conflicting styles at times. It also functions in part as a memoir of an unintentional scientist. Whitaker had an unusual path to becoming a researcher, which adds an interesting element of storytelling. It also shows how people with diverse educational backgrounds often find important ways to collaborate with researchers from other fields. At times I felt like the switch between memoir and harder science made the book geared towards conflicting audiences. Sometimes this served the text, but others it did not.
One of the things that struck me early on about this book, that made me quite excited, was the author's discussion of social issues and how they pertain to sciences and the history of research on birds. In many texts, we learn information about great ornithologist of the past such as John James Audubon. Times have been changing, and some Audubon Societies have voted to shift their names to something other than a man who enslaved people and shot birds that are portrayed in his famous artwork in order to pose the dead bodies. It was interesting to see a text not only mentioned Audubon's history, but also call attention to one of the times that he really messed up in both his research methods and his conclusions. Due to his extremely faulty studies of turkey vultures (and through ineptitude mislabeled black vultures,) a myth was spread that birds do not have a keen sense of smell in his publication of his results. We now know the turkey vultures can smell carrion from miles away- they are one of the few species of birds whose evidence for keen sense of smell is widely accepted. Other ornithologists called him out on this. The issues remained.
When discussing the exclusion and oppression of women in sciences, the author draws the conclusion that the reason that smell was not given as much attention in ornithology and other research is that women like her were the ones studying it. I think this is a bit more complicated as she discusses men rebutting claims that birds could not smell early on. She bases much of this on personal (accurate, believable) experiences being shut down by men regarding her hypotheses and findings. It is also worth noting that the biggest beneficiaries of things like affirmative action are white women, but race is not discussed much until the end. She also discusses the myth that birds cannot smell you (being the reason that returning nestlings is ok.) While well intentioned, it is not true, and luckily many warnings have been updated to say returning baby birds to the nest even if they do smell like you isn't a problem. In my experience, most people working in in bird and other animal rescue are women. So it seems the proliferation of the myths came for many sources. None of this is to say that we should not be aware of these biases as it is well known that women are over represented in many fields that involve the care of and understanding of other animals
Another reason why the myth of birds having an inability to smell proliferated was due to incorrect hypotheses about brain size. You may have heard the phrase bird brain used to describe someone negatively. The reality is that while birds have smaller brains, the neurons within are much more densely packed. This is why we find out through research, and to be quite honest through observation of anyone with an open mind, that birds are able to think, feel, have culture, individual differences, and so on. We also learned through research like that of the authors that birds have keen senses of smell that are important in many aspects of their lives. Through her own and others research, the author has found evidence that smell influences birds' social lives, mate choices, health and well-being, traits of offspring, and even the proliferation of a healthy microbiome. I will not go into too much detail of these because I want to focus a little bit more on how science was written about in this book.
I did not have the same reaction that some other readers had to the science reporting in this book. There is more nuance to it for me. I believe that the biggest error is that this book seems to be written for the layman at times and at others is geared toward people with science and statistical backgrounds. As a result, when the author reports an observation and then refers to that observation as not being "statistically significant," folks with a science/statistics background know that this means that that result could be caused by chance (or human error/bias.) We know that this is something that needs to be studied further or something that may not exist at all as a result. People without any science or statistics background may read these passages and take away from them that the result was proof of a behavior. Whittaker choosing to mix many of her statistically significant results with other observations that may be caused by pure chance or coincidence can be seen as irresponsible with a mixed audience.
On the other hand, there is a large issue in science publication wherein only certain results that support certain hypotheses end up being published. However, it is very important for us to also publish when studies do not support the hypothesis, but these papers aren't as sexy and as a result, are not found in journals nearly as much. With this reality in mind, I found the author's humility regarding what she found in many of her studies to be refreshing. She discusses the results in a rather young field and admits when her team made mistakes, didn't find what they were looking for, or where the methodology even if it does provide a cause and effect result, may not tell the whole picture. The last point is extremely important and something that I find highly frustrating in a lot of science reporting on other animals. I thought the author did a good job of this provided that the reader understands what some of the terminology is ahead of time.
The ethics reporting in this book started off strong but ended up mixed or disappointing at times. While she did highlight some of the problems with researchers like Audubon and mentioned that some studies with birds are cruel, she goes on to discuss many of these things later to support her points. She does so not only without criticism, but with faulty euphemisms to turn off the reader's (and I assume her own) empathy and cognitive dissonance. I would honestly rather someone report on horrific abuse of animals in sciences without comment, than to do so in a way that falsely placates the warranted worries of the reader. I also found some of her descriptions of her own actions with birds to go against her assertion that research causes stress that must be accounted for and reduced as much as possible. None of this is unusual for science writing, but I expected better from an author claiming to go against the grain in terms of oppression in science. We need to accept that the idea of "no difference that humans chose to see" does not mean suffering did not occur. I believe anyone who's had brain surgery or injury can explain pretty definitively that is it is not like getting a paper cut yet it is always treated that way and text like these, and those are people who can actually grasp what has happened and why.
I believe her reporting regarding evolutionary advantages to certain aspects of avian scent to be frustrating at times. This is another thing that is very common in science texts and I don't really understand why. Perhaps it is the need to be able to streamline things into a simple conclusion, or just seeing what we want to see. We know from the entire study of evolution that traits existing currently in any living creature are not all entirely advantageous. We know the evolution is something that takes place over an extremely long amount of time with traits appearing randomly and some proliferating through selective breeding. However, since you cannot isolate or remove one aspect of anyone, other traits will proliferate with those some of them being advantageous in others being not at all- sickle cell anemia being protective of malaria infection for instance. There are also tons of individual differences especially psychologically. Whitaker goes out of her way a lot to talk about why every single thing birds do is due to evolutionary breeding advantages. Maybe birds sometimes just like having sex. Maybe some birds that are paired for the season, or especially for life, don't mind raising the young that is genetically sired by another bird because they like their partner. Or maybe they're just used to that partner and the comfort of staying there outweighs the need to genetically pass on information. Think about how many things humans do that are not evolutionarily advantageous. Other animals like humans are messy in this arena. I don't think we really need it as much time spent on evolutionary reasoning for results as they are interesting enough on their own.
The large section at the end of the book on microbiomes is where I learned the most. There was so much interesting information in there that I'd never heard before and the sections which included human information ended up making things more personal. I have hyperosmia. My sense of smell being so strong and my reactions to scents both ruin my life at times. Post-covid-19-lockdown era (covid is not over,) we know that many human beings have also experienced changes in both the scents they emit and what they can/not smell. I never realized how much physical distancing would have to do with that though until reading this book. Discussions on the combination of microbiomes through affection and socialization being important was extremely interesting. To folks wno commonly DNF books, even if you're familiar with things in the first chunks of the book I really recommend reading through the last part.
I realize that my review appears highly critical, but this is not because I did not enjoy nor get a lot out of this book. On the contrary, I learned a great number of things and this vastly expanded my understanding of birds. I now find myself thinking about avian scent research when I'm out birding, adding an entirely new aspect to the way I understand these birds' interactions and lives in general. I chose to focus critically on the writing based in part on how other reviewers discussed this book. All of this is to say that I recommend reading this book even with these criticisms in mind. Going into it already knowing to look out for some of these things enriched my experience and allowed me to focus on the things that I really wanted to learn. I would definitely read more by this author and I look forward to hearing about new advances in research on avian olfaction.
This was also posted to my storygraph and goodreads.