Working with Flickr api to display images of Lions, Tigers and Bears in separate CollectionViews. Using TabBarController to navigate through the app. Also, information on the picture is being displayed (author, description, location). The location is also being shown using MKMapView. Additonal information on the author is being shown in a WebView. The Flickr api is difficult to work with. You have to update the api url / keys almost daily to them expiring after day use.