You can also consult Wikibooks' [https://en.wikibooks.org/wiki/Field_Guide/Birds|Field Guide to Birds] to help you identify some birds. As of this writing, this field guide is still in its infancy, so you might be well served to purchase a more thorough [http://amzn.to/1H5YJQL field guide] book, especially since physical field guides don't need batteries or Wi-Fi. Field guides are generally tailored to a specific area of the world, so be sure to consult one that covers your area.