I know I have been having trouble with keeping my wildlife class busy, and I found some great resources and created a webquest for identifying birds. Attached is the webquest (feel free to edit) and below are some websites/videos to use as well.
Also, the Cornell Lab of Ornithology just came out with a new app called Merlin Bird ID and it is free. I downloaded and played with it, it really helps and goes along with the all about birds website and their 4 key items to look for when identifying birds.
Your online guide to birds and bird watching Cornell Lab of Ornithology All About Birds
I hope you find this useful!