Day 71: All aboard!

Peters Hill, Arnold Arboretum, Jamaica Plain, MA, 6:50am-7:20am
clear, frosty, cold

I love the crystal-clear skies of winter. This morning just the barest whisper of purple cloud hovered by the horizon - otherwise, it was clear, free sky in every direction.

Today's bird was conversing with a few others. It was fun to hear the back-and-forth from all sides, the little build-up as they all get involved, and the climactic trill (who was that??):


I got as close as I could, and am pretty sure he's a kind of sparrow, but would love help confirming this!