Hi Dan
We spent the middle of April to middle of May 2014 in SW Arizona. It is a great time to go. Around the middle of May it started to get pretty warm outside. I made up a number of blogs of our trip. if you are interested click or copy the link. When you get to the bottom of the first blog click on ?newer post? to get to the next one. It will show you species and where they can be found. (Montezuma Quail., Red-faced Warbler, Elegant Trogon., Mexican Chickadee, Condors etc.)

http://lenanddiansadventures.blogspot.ca/2014/04/portal-arizona-april-17-22-2014.html

Hope that helps and have fun.

See you in the field
Len Jellicoe
Abbotsford, BC
Canada