Passerines -

Gotta Love the Black-capped Chickadee!

This little guy is acting tough and is dead serious about it.

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 and it wants no intruders.

My bird-feeding station is just to the left, out of the picture. Actually, I should say that IT'S feeding station is to the left, because that is exactly the way this little guy feels about it, i.e. the feeding station belongs to it.

And you see, right now it is telling the "Pssst-Pssst Bird" to stay the hell away!

Black-capped Chickadee
Here are two quality references:

chickadeemaine state birdmaine birdpasserinesmall birdblack and white birdblack and whitesunflowerwinterresident birdtitmicenuthatchwinter torpor