Warbler Guide App
Tom Stephenson & Scott Whittle

Winner of the 2016 PROSE Award for Best App/eProduct

The Warbler Guide App is the perfect companion to Princeton’s revolutionary and widely acclaimed book The Warbler Guide, by Tom Stephenson and Scott Whittle. Whether for study or field use, this innovative app delivers the full power of The Warbler Guide in your pocket—plus unique new app-only features.
The app allows you to identify birds by view or song, quickly and intuitively. Exciting new 3D graphics enable you to view a bird from the exact angle you see it in the field. And the whole range of warbler songs is easily played, compared, and filtered.

Breakthrough features from The Warbler Guide book that are included in the app:
• Rapid and confident two-step ID process using visual finders and comparison species
• The first complete treatment of warbler songs, using a new objective vocabulary
• An intuitive visual finder that includes side, 45-degree, and undertail views
• Master Pages with detailed ID points
• Complete guide to determining the age and sex of warblers with photos of all ages and sexes
• Annotated sonograms showing song structure and key ID points
• Complete songs, chip calls, and flight calls for all species
• Comparison species for making confident visual and audio IDs
• Many additional photos to show behavior and reinforce key ID points
• Highlighted diagnostic ID points
• Color Impression Icons for narrowing down ID of warblers from the briefest glimpses
• Behavior and habitat icons

Unique new app-only features:
• 3D models of birds in all plumages, rotatable and pinch-zoomable to match field experience of a bird
• Intuitive, visual, and interactive finders with filters for possible species based on audio and visual criteria chosen by the user
• Playback of all songs and vocalizations with sonograms makes study of vocalizations easy
• Selectable finder sortings grouped by color, alphabetical order, song type, and taxonomic order
• Interactive song finder using objective vocabulary for fast ID of unknown songs
• Simultaneous visual and song finders make identifying an unknown warbler even easier
• Half-speed song playback allows for easier study of song structure
• Comparison species with selectable side, 45 degree, and undertail views
• Features 75 3D images
• Covers 48 species and 75 plumages
• Includes 277 vocalizations, 156 songs, 73 contact calls, and 48 flight calls
• Detailed "how to use" tutorial screens

Requires iOS 7.0 or later

Tom Stephenson’s articles and photos have appeared in Birding and Bird Watcher’s Digest, at, and in the Handbook of the Birds of the World. He has guided groups across the United States and Asia. A musician, he has had several Grammy and Academy Award winners as clients, and was director of technology at Roland Corporation. Scott Whittle lives in Cape May, New Jersey, and has twenty years of experience as a professional photographer and educator. He holds an MFA in photography from the School of Visual Arts in New York, is a fellow of the MacDowell Colony, and is a onetime New York State Big Year record holder.

What’s New

Version 1.1.0

This app has been updated by Apple to use the latest Apple signing certificate.

* High-resolution, zoomable, and rotatable 3D models of birds in all plumages, to match field experience of a bird
* Detailed "how to use" tutorial screens

Ratings and Reviews

4.4 out of 5
25 Ratings

25 Ratings

Funkeymonkeys ,

GCWA are in Tx not CA!

I’ve been using this app for several years. It’s a handy reference to carry on your phone when out in the field. I love the ability to change views of all the birds to compare with the view you saw.
Living in central TX, I’ve wondered why they don’t list the Golden Cheeked Warbler at all. I figured it was so regionally limited to the TX Hill Country that they chose to omit it. Just today, I switched my map from the Southeast Version to the Southwest Map which covers from New Mexico to the pacific. Guess who I found! Golden Cheeked Warblers are only listed in the SW map (which does not include TX for this app). Please, consider moving our favorite warbler to its rightful territory!
The app would be much improved by making it easier to show “overlap” birds for those of us who are close to two map edges.


Good content needs search function

Great content. Really helpful for improving ID. Could benefit from a search option to locate whatever bird you want to see. It’s hard to use in the field when you run into a bird and quickly want to navigate to its info pages.

Jensbirds ,


An absolutely terrific app. It's incredibly complete for identifying warblers in all seasons, with many superb photos of each bird from realistic and very helpful angles - including an amazing rotatable 360° view - and a wide selection of different versions of each bird's songs and calls. You can filter for geographical area and time of year, which is tremendously helpful for narrowing the field of candidates right out of the gate, then optionally also filter for a variety of specific characteristics if you want to narrow the possibilities even further. An incredibly valuable resource. I just wish other field guides had some of the same great features. (And no, I don't know the makers of this app personally!)

App Privacy

The developer, Princeton University Press, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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