Resources such as field guides have existed since the dawn of time. I believe the first Neanderthals started scribbling on cave walls describing the world around them (probably just telling cave mates to stay away from their kill). Since then however, field guides have been invaluable resources thanks in large part to Darwin and his amazing journaling skills. The following nature guides represent the finest that the app store has to offer in providing you the most superior fielding experiences available, whether your ambition is flowers, birds, trees, reptiles, rocks, or anything in-between.
The Best Nature Field Guides