Mystery Solved

I have been a member of the local Audubon Society.  So I receive their newsletter, which just arrived to tell me this news that Mountain Chickadees moved into the lower elevation for winter when not enough food(conifer seeds) was available in the higher elevation.  It happened in the winters of 2000-2001, 2007-2008, 2012-2013, and the current 2015-2016.

No wonder I found one of them in my backyard this winter.

"You got it finally."

"I appreciate your seeds."