2 Cutie Fledglings - But What Were They?

I was sitting in my chair on the lawn observing the bird feeder while in Maine. Movement across the yard caught my eye. In the fringe trees from the narrow strip of trees between properties I noticed a small bird land on a branch of a small tree. Putting binoculars to eyes I spied a small fluffy bird. So I moved slowly to get a closer look.

Hum, I wonder what this little bird is I asked myself.  I looked around and low and behold I found another one.

Wow, white eye rings connected to look like spectacles. Buffy to yellow on it's side. And look ma, no tail feathers, well they are beginning to grow. The tail feathers are the last to grow. Two white/yellow wing bars are evident.

Then the racket started. I looked up and saw what I presumed to be the adult. I took a quick picture and backed off so that mom or dad could feed their young.

Do you know what it is yet? It is a Blue-Headed Vireo carrying a treat for one of his or her young.
This was a first for me, life bird.

I also saw red-eyed vireos regularly in the yard as I have in other years.