Passerines -

Gotta Love the Black-capped Chickadee!

This little guy is acting tough and is dead serious. When it heard me making the "psssst - pssssst" sound it suddenly started flailing its wings out and puffing up. It must be territorial behavior. That is mashed up sunflower seed in its bill. My feeding station is just to the left, out of the picture. I should say that the feeding station belongs to this little bird , because that is exactly the way it looks at it.

Black-capped Chickadee
Here are two quality references:

chickadeemaine state birdmaine bird passerinesmall birdblack and white birdblack and whitesunflowerwinterresident birdtitmicenuthatchwinter torpor