Wild Bird Wednesday - a Singer

This beauty is serenading from the trees in the front yard and feasting on the berries of the viburnum next to the house.  I hear its distinctive song and grab the camera, mostly only to see a flash of white tail feathers as it flies away.  Its back is a soft grey-brown and undercarriage a grey-white.  A rather large bird, but not quite as big as a mourning dove. Wings are short in contrast to the tail; beak is short and dark.  The examples of song birds that I saw on the Cornell University all about birds website didn't have didn't have the prominent dark markings on the head as this one does.  Anyhoo!  I'm thinking a Northern Mockingbird?  What say you?

Here are the viburnum berries that the birds are loving right now:

Linking to Wild Bird Wednesday .