F/6.3, 1/1000, ISO 450.

American Tree Sparrow 

Why don’t skeletons fight each other?

They don’t have the guts

Interesting Fact:  Misleadingly named by European settlers reminded of Eurasian Tree Sparrows back home, American Tree Sparrows are ground birds. They forage on the ground, nest on the ground, and breed primarily in scrubby areas at or above the treeline. ( https://www.allaboutbirds.org/guide/American_Tree_Sparrow/lifehistory )