A couple of years back, the The Crossley ID Guide for Eastern Birds came out and it caused a huge splash in the birdwatching world. For some time now it has become apparent that bird watching, especially the identification part of it, was changing in its approach. We describe it this way, though I think the reality is more complex: In the old days we used logical links to known reliable field marks to turn carefully made field observations into species identifications of varying degrees of certainty. Now, a new approach has been developed where we look at the whole bird and get an identification using an overall gestalt, and then to the extent possible verify the identification with tried and true field marks.

picture of Peterson's field guide page

Old Style: Carefully drawn images or photos showing keys to identification.

This consideration of methodology would be a great way to get into how humans make observations and draw conclusions … how we think and how we know things, in fact … and would not be done well enough without bringing in semiotics and other areas of philosophy. Some day we’ll do that. In the meantime, just consider the difference between a typical field guide and a guide like Crossley.

Well, now, we have a new book to play with: The Crossley ID Guide: Raptors. This new volume follows the same principle as the original Eastern Birds book, but with some important differences. A very large portion of Raptors is not images, but rather, very information rich species accounts along with pretty darn good range maps. The first half or so of the book consists of the usual Crossley style plates. Here, we have gone back to an old style layout: Text and details in one section of the book and plates in the other. Another important difference is that there are more images per species, for the most part, in Raptors, and in some cases, variants are given their own sets of plates.

Crossley plate

Crossley Style: Lots of photos of one species as they appear in real life, in an appropriate context.

Also, there are plates showing many individuals of more than one similar looking species, with the key indicating which image is which species located elsewhere in the book so you can’t cheat by just looking at the caption, and get to learn the differences without leaving the comfort of your birding gazebo, or wherever it is you hang out.

Overall, there is far more information about each species than in the Eastern guide, which is of course exactly what we would expect from a more specialized volume such as this. There is also a handy comparison-of-everything graphic in the front cover with page numbers, a nice map in the back, and the other usual amenities found in most bird books these days.

I used some of these images to construct the quiz I put HERE (the winners of that quiz to be announced soon).

I can not do the images justice with inserts into a small format thing like this blog post, but here are a few examples to give you an idea:

CrossleyExample01

CrossleyExample02

CrossleyExample03

This is not a book review, in that I’m giving you the negatives and positives of a particular book so you can decide if you want it or not. This is, rather, a notice that the book you want is available now.

While we are on the subject of raptors, you will probably want to check out this video of a red tailed hawk trying to get at the eggs or chicks of a bald eagle, but instead, becoming the eagle’s lunch. Caution: It is gruesome.

Enjoy your new bird book!

Comments

  1. #1 Jeffrey Goodwin
    Santa Rosa, California
    April 5, 2013

    I like that it is a different approach. The Roger Tory Peterson field mark method has worked for me for years, but it does have some limitations in individual birds whose plumages don’t fit within the confines of the several pictures on each plate.

    However, an approach that emphasizes the gestalt of a species, especially in motion, would be very useful for field observations where birds rarely pose in perfect profile with little arrows pointing at field marks.

    I’m looking forward to grabbing up the Raptors edition. Is there a Western Birds edition out yet?

    Note: Gestalt…a good alternative to the word birders use. I still can’t use the other word without snickering.

  2. #2 Doug Alder
    April 5, 2013

    That’s one angry eagle

  3. #3 Greg Laden
    April 5, 2013

    There is not a Western bird edition at this time. I’m not sure what plans are in the works, maybe I can find out about that.

    I would also like to see some other specialized volumes as well, like waterfowl.