Bird Tracker for Mac

From MacProductive:

This is a great way for bird watchers to keep track of the birds they have seen. It is easy to use and develop into a tool for learning. Included buttons make it easy to search Google for images and bird song audio that can be stored in the database. There's also a button that will take you straight to the appropriate entry (if it exsists) on Wikipedia. Freeware though donations accepted.