Location Emiquon Preserve, Lewistown, IL
Over by the office at the south end of the parking lot, I saw some movement in one of the trees across the entrance road. I saw a Tree Swallow and this sparrow, very obvious with the dark cheek patch. The rusty cap was also distinctive.
The sparrow appeared to enter into a cavity of the tree while the swallow sat there watching. I wonder if the sparrow was ejecting the swallow from the nest site, or maybe the swallow was contemplating the same?
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