Robin's Nest

We have a pair of robins nesting in the maple tree in our backyard. I think that there are three babies in the nest. Every so often  you we see a third head pop up from behind these two. My neighbor's two grandchildren and I enjoyed watching them this afternoon. I think this is the male in the nest. He seemed tolerant of us watching from several meters away. When the female returned, she watched me for a few minutes as I took down my camera and tripod. Then she did a fly by about a 30cm over my head. She is more protective of her little family.