Ones to look for: Brewer's Sparrow

In Louisiana it's always fun to look at what might be a Chipping Sparrow that turns out to be a Clay-colored Sparrow instead. It's even better to look at what might be a Clay-colored Sparrow and see that it's actually a Brewer's Sparrow, which basically a plainer version of Clay-colored Sparrow from the arid Interior West. 

Here's a series of Brewer's images taken this month in Wyoming.