I'll go for Greater Pewee but presumably if the tanagers and warblers return, you could be up for Flame-colored Tanager or Rufous-capped Warbler in the next month.

Burrowing Owl, Cassin's Sparrow, Swainson's Hawk and Long-billed Curlew seem like the easiest. If I had to pick one I'll pick Cassin's Sparrow.

Chet

Good guesses by both Andy and Chet. I actually tried to get to a known pewee site yesterday but the road was so atrocious I grossly overshot the canyon entrance. Anyway, it's probably early.

Cassin's has been reported in our area but not since 2000. The best time to get them, I'm told, is in the southern grasslands during/just after monsoon (July/August) when they tend to be singing.

Anyone else?

I spent a summer at the Southwest Research Station in the Chiricauhuas and had quite a few Cassin's in the grasslands east of Portal. They should be singing now and have such a distinctive and cool song it's hard to miss them. Burrowing Owls also nest in that area. Of course Greater Pewee, Whiskered Screech Owl and Buff-breasted Flycatcher are also nesters higher up. I used to wake up to Buffies singing at the research station. I sure miss that place!

Chet--

The Chiricahuas are on my list for a trip this year--just as soon as someone reports Short-tailed Hawk. I also need Mexican Chickadee and Yellow-eyed Junco. I've heard so many awesome things, I can't wait to go. Southeastern AZ really is magic, isn't it?