Mourning Doves still nesting

Since many Mourning Doves have two nestings, some can still be found on the nest like the one in this pic. I was actually looking for another bird I had seen fly into this shrub when I looked up and found I was close to this dove. I was surprised that she didn't flush as I have inadvertently flushed other Mourning Doves that had less tolerance for humans being too close to their nests. It is apparent from the pic why I didn't see this dove until I was so near and that is because she is very well camouflaged.
SeEtta