The Macaulay Library Animal Behaviors Catalog offers some nice sound recordings and videos of various animal behaviors including: courtship, stalking, defense, etc. For example, you can listen and watch the Golden-fronted Woodpecker.
It has a convenient search feature to help you quickly locate a particular critter. The advanced search offers choices such as searching by the scientific name, location, and other options. You can click the Get Started button on the homepage for more details about the site. The library is in development and has several animals not yet digitized.
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