I will be adding more as I find helpful Bird apps for your pc and mobil devices.
FREE: Peterson Backyard Birds--A Field Guide To Birds of North America
Easily identify over 160 backyard birds. Rating: 4.5 out of 5 stars
Designed for iPhone and iPad
FREE: Merlin Bird ID--by Cornell Lab of Ornithology Answer 5 questions, and Merlin magically comes up with the bird you saw! Rating: 4+ out of 5 stars
Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.
FREE: iBird Lite Universal Android App for Smartphones and Tablets ID 50 birds of the US and Hawaii, photos, bird calls, etc. Rating 4 out of 5 stars