On Monday, Valerie Knipping asked:

Can you or anybody help me with the identification of the bird shown below>

I was at Verona Park in Verona last week when I spotted this loon. I've never seen a loon here all the 25 years I've been birding there. What kind of loon is this?

The consensus is that it's a Red-throated Loon. Thanks to all who replied (and helped the glitch the first time I posted the mystery).

Valerie writes that the loon was still there as of Thursday.