I too suffered from ENS. Though I wish I knew what my bird family was. Need to take that Audobon Birding class at the local adult school. But it is a lovely cone shaped nest in the angle of branches of a sour gum tree that the City of Berkeley planted in the sidewalk strip. A few weeks of feverish activity and one day, no more. I look up and check the nest when I get into my car, hoping it will be used again by a new renter. But everyday with no mother to tend it, it has begun to succomb to the vagaries of wind and weather.

I found a small nest with nothing but a round peice of dirt in it. What is this, what kind of bird. Any info would be greatly apreciated.