Use this forum thread to discuss Winged Explorer Interactive Field Guide to Birds of North America..
Overview of Features:
http://www.whatbird.com/wingedexplorer/features_winged.aspx
Technical Features:
http://www.whatbird.com/wingedexplorer/WETechnical.aspx
Download Winged Explorer for Mobile Devices:
http://www.whatbird.com/wingedexplorer/downloaddemo.aspx.
iBird Explorer: Finally a field guide as light as a feather. See it at http://www.ibird.com