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Bird watchers are a passionate enough lot, but among fanciers of all things avian, a group of birds collectively known as the warblers inspires a devotion that often borders on the fanatical. No one should be surprised.
In the groundbreaking book, âA Field Guide to the Birds,â ĂŒber-birder Roger Tory Peterson referred to warblers as âthe butterflies of the bird worldâ and characterized them as âbrightly-colored mites.â Other writers have called them âavian jewels,â and every spring, warblers are the birds that drive many people to drop everything in favor of getting out at dawn and spending the rest of the day in pursuit of these splendid creatures.
Iâve been there and done that, but, I and my colleagues will readily admit, it can be a frustrating endeavor. Not only are warblers, even in their spring finery, so energetic that theyâre often hard to pinpoint, but some species are actually quite drab and, of course, doubly hard to pinpoint. And as far as catching them as they migrate back through our area, in late summer and early autumn, from the northern boreal forest nurseries, well, itâs in the nature of things for the jewels to lose their lustreâand for the âconfusing fall warblers,â as theyâre known, to cause birders to become philosophical. âYou should not attempt to do much with them until you have mastered the spring warblers,â counseled Peterson. âIf at the end of ten years of field work you can say you know the fall warblers you are doing very well.â
Ten years, at the very least, is a long time, but before you shrug your shoulders in resignation, I have a bit of information Iâd like to share: information that can help you take years off your journey towards achieving mastery.
Navigate to your favorite bookstore, be it brick and mortar or online, and pick up a copy of The Warbler Guide, by Tom Stephenson and Scott Whittle (Princeton University Press, $29.95). Youâll also want to order The Warbler Guide Song and Call Companion, which features audio files, in MP3 format, of all the vocalizationsâthere are more than 1,000 examplesâin the book.
If youâre a warbler aficionado, this is, quite simply, the best 36 bucks youâll ever invest. Stephenson and Whittle have produced a visually and aurally spectacular bookâthe first, and, just maybe, the last word on these intoxicating birds, at least for the foreseeable future. If previous guides get you into college, this one will take you all the way through graduate school. The Warbler Guide is your passport to a birding PhD.
âIâve spent lots of time birding outside the U.S. and I quickly discovered that no guide gave me the sense of completeness that I needed,â said co-author Tom Stephenson, a birding-trip guide who is also a fine photographer, a wizard with sound equipmentâhe recently retired as director of technology at the Roland Corporationâand a percussionist and classical cellist who once toured with the Grateful Dead. (âIâm lucky Iâm not deaf,â he told me in a phone interview.)
âI wanted to create a guide that worked like the way good birders birdâa real world guide,â added Scott Whittle, a professional photographer who, in contrast to Stephensonâs nearly lifelong avian love-affair, has only been at it for less than ten years. âI have a kind of advantage, since Iâm closer to the learning process of beginners.â
The goal, when the two colleagues got together a couple of years ago to craft the book, was to provide a guide that would be universally accessibleââsomething everyone can use,â said Whittle.
And while this might not have been a deliberate intention, the birders also wound up putting together something revolutionary. A couple of years ago, I wrote about a new guide by British writer and photographer Richard Crossleyâa book that featured lots of different photographic views of birds instead of the traditional, and revolutionary in its day, illustrations and arrows pointing to one or two key identification characteristics: the hallmark of the Peterson system. The Warbler Guide represents the next step in the Crossleyfication of bird booksâand of learning to identify birds.
âThose arrows could also be blinders,â said Stephenson. âThey could steer you in the direction of not paying attention to other things that could be equally useful for identification purposes.â
Once youâve worked your wayâand this book does require studyâthrough the Guideâs 560 pages and the Audio Companion, you will have every conceivable one of those âother thingsâ at your disposal. And you will also have learned how to be a more complete birder, whatever group interests you.
After a brief introduction and orientation, the Guide starts with a topographic tour of relevant warbler feathering, from the tail to the lores (the plumage between the eyes and the bill). The authors then go into more detail, in a section called âWhat to Look for in a Warblerâ: contrast and color; size, shape, habitat, and behavior; the face; the body; and the undertail. This last part alone may be worth the price of admission, and a great example of the bookâs nod to real-world birding. All too often, as any warbler aficionado will tell you, a fleeting glimpse of the underside of the tail is all you get.
There follows a section that explores a particularly challenging aspect of identification: aging and sexing warblers. And then, thereâs what I consider the piĂšce de rĂ©sistance â and a part of the book that distinguishes it from anything else out there: a beautiful explanation of how to listen to bird song and use it as an identification tool. Instead of offering the tried-and-alas-only-semi-true transliterations of songs, Stephenson and Whittle use sonograms, unambiguous audio spectrograms or voiceprints. I use these all the time, and, in fact, I create them from recordings I make. But despite my experience, I still find them hard to use by themselves.
After working through the âHow to Listenâ section, Iâm not having that problem anymore, and since the collection of sounds to listen for includes chip and flight callsâvocalizations that are rarely covered in most booksâyouâll have all the aural information you can possibly need to make IDs when you can only hear warblers but not see them, which is to say, most of the time.
There follows a section of quick finders, organized by sight then sound. After using these, youâll then be ready to jump into the individual species profiles, which include myriad distinctive views, comparisons with species that are similar in some way, aging and sexing tips, and sonograms keyed to the Audio Companion.
Thereâs even, in the back, a series of quizzes to help you review all youâve learned.
âBirders often donât have all the pieces they need to link together into an identification,â said Stephenson. With The Warbler Guide, now they do.
A Note to Readers: Iâll be doing another column or two on this book and its authorsâboth fascinating gentlemenâin the not-too-distant future: probably around migration time as the âconfusing fall warblersâ pass by during the day and night. But I need to note, in the interest of full disclosure, that the Princeton University Press provided me with a free review copy of the book and the audio guide. They did not, however, pay me to write anything, require an advance look at the column, or set me up with my own bookstore. In other words, my views are my ownâand my view is that this is definitely a Guide to get, use, and savor.