HI Sam:
Princeton University Press is working on two new Mexican birds guides.
One is a photographic guide by Michael Ritter and the other is a compact
updated version of the Howell guide. No publication date has been set for
either book.
sincerely
Ian Paulsen
Bainbridge Island, WA, USA
Visit my BIRDBOOKER REPORT blog here:
https://birdbookerreport.blogspot.com/