Observed today 2/19/19 SW Ohio .Local birds are Red Tailed and Red Shouldered.Merlins and Rough Legged are sometimes seen .Thanks. Two different birds.
I would lean to Black-chinned female due to the dirty grey cap, the eyeliner and the black tail feathers.The cap on a Costa’s would extend down over the eyes .
If the bird vocalized at all, that will be the most reliable means of ID. A Tundra makes a hoo coo ,almost owl like. The Trumpeter will ,obviously sound like a instrument being played.