Hour and a half at the Agricultural History Farm Park this afternoon
produced:

Purple Finch - nice to spot one in the "wild" so to speak.  Have only
seen them at feeders before this.
Great Horned Owl - led to by some noisy Blue Jays
Sparrows, including Fox, Field, Swamp, Savannah, Song, White-throated
and DE Juncos.

Like many others have also had PUFIs and Siskins at backyard feeder over
the past week.

Good birding,
Andy Martin
Gaithersburg