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Thayer Birding Software eNewsletter
October, 2011

Gold Edition
version 5 
Gold Edition
The Ultimate
Birding Resource 
Version 4 for Windows and Mac!
Birds of North America version 4
Birds of North America v 4
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Binoculars and Scopes
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Check out the
Binos for Birders!
Nature Books 
Nature Books
Butterfly Book
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Free updates are now available for version 4 and version 5 (the Gold edition.) These free updates reflect recent taxonomic changes made by the American Ornithologist's Union.

To download these free updates, simply open your birding program, click the Help tab in the Menu bar [click eViewer on Mac computers] then click "Check for Updates." You may have to give your computer permission to download the files. Once it is downloaded, click Install. You will need an Internet connection to get these free updates.

After downloading the first set of files, open the program again and click "Check for Updates" a second time. Install these files as well. Now close the birding program and then reopen it. You should then be running version 4.1 or version 5.1. You can click Help and then click "About eField Guide Viewer" to see this version number and a copyright date of 2011. (The desktop icons will still say v4.0 or v5.0.) more>>

If you have an older version of our software such as version 2.5, 3.0, 3.1, 3.5 or 3.9 these free updates are not available. You may want to upgrade to version 4 or the Gold edition. Look for the 10% discount code at the bottom of this eNewsletter.


Common Moorhen
Common Gallinule
AOU Taxonomic Changes in 2011 
The Common Moorhen was split. Birds in Eurasia retain the name Common Moorhen while birds in North America are now called Common Gallinule and have a scientific name of Gallinula galeata. They were split based on differences in vocalization and bill and shield morphology as well as mitochondrial DNA studies.


Another big change is in the scientific names of the wood-warblers. Most had their genus name changed. Setophaga replaces Dendroica, for example. When sorted in taxonomic order you will find that many wood-warblers have been moved around.

In addition, Snowy Plover has a new species name. For those with the Gold edition, some of the rare asian birds are now placed in the family Muscicapidae and the sort order has been rearranged. 

Here is a link to the 2011 report from the AOU detailing all changes made this year.

(By the way, we also made it easier to see the bird's name when running a Flash Card quiz.)
Birding is fun and, the more you know, the more fun it becomes. Learn more about birds! Sign up for our other Free Birding Newsletters! 

Good birding,

Pete Thayer, President
Thayer Birding Software 
Limited Time Offer
Save 10% when you buy the new version 4 or
the Gold edition birding software at

At checkout, simply enter the promotional code:  Loyal

         Gold Edition version 5.0       v4GBNA_100        v4State_100