In the dead of winter, we all crave a little wildlife and outdoor adventure. For a breath of fresh air, invest in apps that could teach you more about trees, birds and everything in between. See also: 10 Apps for Enjoying the Great Outdoors Whether you're a citizen scientist or are just beginning to appreciate nature, these five apps can help you identify a tree by its leaf or test your outdoor nature skills.
![](http://a1133.phobos.apple.com/us/r1000/080/Purple/af/11/03/mzi.wfggbkzg.png)