I had originally posted these four images as Lincoln's Sparrows. They are in fact Swamp Sparrows. There was a mix of Swamp, Song and Lincoln's Sparrows flying about. According to the literature, Swamp and Lincoln's Sparrows are closely related and that they are the closest living relatives of the Song Sparrow. I got images of all three Sparrows on the day these images were taken. The Lincoln's being a first for me.

Four images/views of a Swamp Sparrow.

Top Image: Front, head-on view.


Front, head sideways, view.


Side view.


Back/top view