This particular junco seemed big to me, with fascinating white wingbars and an apparent extra white tail. These characters strongly make me suspect that this is one of the White-winged race of Dark-eyed Junco from the Black Hills of South Dakota.
This morning I found another White-throated Sparrow. In the last two days, the number of this species I’ve found since 2009 has doubled from two to four. We’ve also reached a yearly milestone with now 50 casualties for 2018.
For a bit of added sadness, I also happened upon this Song Sparrow at the Kerr-Drummond complex.