Fledgling house finches

I absolutely love house finches.  There are hundreds of them around here, I'm sure; but they get along so well with other birds that I have no reason to dislike them.  I understand they were originally taken to New York to be sold as caged birds, and were eventually turned loose; once set free, they proliferated.  I found that information HERE.  
I don't know where the little creatures nest around here, but it must be close; I keep finding fledglings in my back yard.  Today I went out to fill my birdbath.  As I approached, I noticed a house finch perched on the edge; even when I was a mere three feet away, he stayed there.  I sat my bucket of water down, reached out my hand, and made him perch on my finger.  I then transported him to the bird feeder so I could refresh the water in the birdbath.  When I was done, I got him on my finger and returned him to the edge of the birdbath.  
"Whoa," I whispered.  "I have to get a picture of that little bird on my finger."  
Of course, once I went out with the camera, he wasn't so friendly.  
A while ago, though, I looked out my computer room window and saw Sadie pawing at something in the grass.  Looking closer, I realized it was another fledgling and shouted "No!!!!"  
I got the camera, ran outside, and finally rescued the little fellow.  And I got my picture!  (Click to make it larger.)  

He figured out how to fly shortly after I took his picture, and got himself to a safe place.  Of course I gave Sadie a treat for turning him loose.