This app is great but needs updating. One of the major things that must be updated is that when you open the hooded oriole "appearances" and tap "streak backed oriole" it shows a species of shorebird. Also, a great feature that should be added is the "birds around me feature seen in the separate app "Bird Calls". A great resource for beginning birder or the experienced.
allondra about National Geographic Birds: Field Guide to North America, v3.5