The alphabetical list by Name is on the first name and is virtually useless.
The alphabetical list by Group is sorted on the name of the first bird in the group. For example Grosbeaks, Buntings & Allies is listed under G. You would have to know the Buntings are in this group, since you can’t look it up alphabetically. There is a workaround. Click on Filter Bird List top right of screen. Click on Group, the first box. If Alphabetic is showing on the top right of the screen, select it and an Alphabetic listing of the bird groups appears. Much easier to scroll through this list to pick up other birds in the list, for example Sparrows in the Group Seedeaters, Finches & Sparrows. Selecting the list of interest allows you to return to the bird filter screen, shows the number of birds found, and by selecting <Back at top right returns to the bird list showing only the selected group.
The alphabetical list by Group has two selections for G, S, and T. None for F, R, or V.
Searching for a Orioles using the search engine as described above returned 0 birds. If this happens try resetting.
Use of hyphenation in birds with two last names, like Bush-Thrush, is inconsistent. Sometimes it is Bush Thrush. There are numerous examples of this in both first and last name fields.
It would be very helpful to use the Audubon approach lumping birds by how they look, such as Long Legged Waders, Ducklike , Shorebirds etc.
I ended up entering Family, Group, First Name, Last Name in an Excel spreadsheet allowing sorting by any of these headers, then adding a column with the Audubon categorization to search on to make a quick reference guide for the field.