"Percevia is the best search engine I've found to identify any bird in North America" - David Lukas, Tiburon, CA"
 
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NOTE: THE PERCEVIA BIRD DATABASE HAS BEEN MOVED TO WWW.WHATBIRD.COM
The WhatBird site has many new features that show off the Percevia software technology.
Be sure and bookmark www.whatbird.com.

SHORT WEB SEARCH TUTORIAL

Search when you know the birds name
 
Search when you know a field mark
 
Using size vs. length
 
Comparing Birds Side by Side

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