Another Scratching Snowy

I chased the sunrise this morning, and it was pretty but not great.

I was getting ready to leave to go home when the snowy egret landed on the post. I positioned myself right underneath him, and was watching him preen...until he began to scratch.

His name?

There was a snowy egret named Dean,
and he didn't mind being seen.
He raised his big claw,
and scratched his white jaw,
then keen Dean returned to his preen.