I somehow doubt this will be much of a challenge for Happy Wombat Boy, however...
Is this a Savannah sparrow? The tail is notched!
And I've lost track of how many sparrows I photographed... is this a Savannah sparrow too?
What about this one? Or is it a song sparrow?
I *think* I may have heard a grasshopper sparrow in the front field yesterday but further research is required. I have been listening to their call on the Cornell site.