I made specific reference to the above checklist in my original version of 'understanding bird orders and families'
and, although that document has now been updated, I’ve retained a copy of the list for reference purposes as it’s in the same format as the “BirdLife International (2015) Checklist
v8” that was current at the time.
This is my simplified version, which shows all 39 orders and all of the 109 non-passerine families. In addition there were 126 families within the order PASSERIFORMES.
A direct link to the current Cornell eBird/Clements taxonomy checklist can be found here