Cell phones have become birding tools. There are phone apps that identify birds by sight and sound.
Denver has a birding app that helps birders find good places to bird. It is noteworthy for pointed usefulness and simplicity.
The Denver app was designed for beginning and casual birders. It offers basic information about particular places to bird in and around that city, and the species you might expect to see.
That's all it does.
It exists at the moment only for Denver. Too bad.
The app is well designed. Information is linked to form a circle of data you can travel with ease — click click click. What birds might be seen? Where? What are the sites like? Where are they? If you visit a site, what species might be seen?
Data and illustrations for 43 species are included. Begin with any of the 15 locations.
It is a design perfect for beginning / casual birders or beginning / casual users of phone apps.