Excitement on my Windowsill—Ansel attacking his reflection, a male Northern Cardinal eating, and a Carolina Wren entering my nest box for the first time!

Ansel flew to my window AGAIN and attacked his reflection. FOR 30 MINUTES. AND HE’S STILL HERE!!!
He won’t stop even through I drew highlighter on the outside of my window to break up his reflection. This time I’m even more sure it’s territorial aggression because another Tufted Titmouse flew up and he didn’t attack it. I’m guessing she’s Ansel’s mate. While I was videoing, a male Northern Cardinal came to eat and a Carolina Wren entered my nest box! This is the first time a bird has entered that nest box.
Ansel still will not leave though. What will make him stop attacking his reflection in my window sill!?

First Bird I’ve Seen in my Nest Box!!!

4/8/2021, 11:30 AM — A Carolina Wren entered my window nest box!!!
I put it out in March, and birds are finally stating to check it out!!!
Today is the first time I’ve seen one enter it, but a Carolina Chickadee and Tufted Titmouse have inspected it before.

Cornell Lab of Ornithology

Cornell Lab of Ornithology