100 years ago, I saw my first mockingbirds. Never saw them in home state of PA or here in Michigan.

You will get a good sighting on the web for sure, also find out what they like to eat.

The site I went to recommended suet, because any bird that likes insects likes suet. You will also attract woodpeckers.

I make suet, and there are tons of recipes on the web. Mockingbirds don't like seeds that much, so your suet can be plain...

In warm places, the suet will melt, so you add flour to keep it from melting. I use masa harina (cooked corn flour) and the suet I melt down is made up of vegetable oil and meat products - mixed. The only place that has this 3-lb can here is Krogers. Any store has suet - it melts down and you can form it in many creative ways, or use empties from purchased suet (which is what I do).

Melt the fat, add flour, let it cool and when it's comfortable to work with, form it.
You can add whatever foods they like to the suet.

Good luck with getting the mockingbirds. I miss seeing them keep cats captive under automobiles in the parking lot of the apartment building we lived in. They are not afraid of cats, and the cats were sure afraid of them.

http://ezinearticles.com/?The-Secrets-of-Attracting-Mockingbirds-Using-Bird-Feeder-Plans&id=5972124