We have several pairs of Painted Buntings show up at our feeders for the past few years. There are currently 4 pair. They have been here since Nov. 
I can tell a couple of them apart by the color on their backs. 
This one has a dark line across the light yellow. Unless you see the rest of them at the same time you will think there are only 2 males…I was lucky to see 4 males on the feeder at once. One has a distinct orange tint on his back and is easy to spot. It is possible that there are more.
The female is a very pretty green.
In the photo below, she is sitting with a male Painted Bunting and a male Indigo Bunting.
There are 4 male Indigos, also. I had thought there were only 3 but they are all in different stages of getting their color. I spotted one yesterday that had only a small amount of blue.
