Thanks for your responses. To be more forth coming, ,have observed this behavior at all times of year as long as weather is warm and sunny. It happens whether or not there are other birds around and many different species exhibit . The two shown are Brewers Blackbirds, ,male and female, but several types of sparrows and even a red breast ed nuthatch have also been observed. To be more specific on the behavior itself, the birds are laying over on one out stretched wing and perfectly still. I at first thought it was injured or stressed but after a few minutes they all resume normal behavior. As a side note, if google had been helpful I would not have asked here.
