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Nature Explorer for Windows is an all-around nature identification program with all 10 nature topics built into the download installer.

10 European topics: Birds, Butterflies, Insects, Mammals, Fungi, Wild Flowers, Reptiles, Trees, Rocks, and Fossils.
NatureNature
 
Explorer
Nature for Windows
The Windows desktop version has all nature topics included
FREE Nature Explorer App for Windows
Nature for Android
The Android 4+ version allows you to choose which topic/s to download and use
Android installation
Instructions on installing the app on your phone or tablet
Android 4+ version for phone or tablet
         Windows version has all topics included.