I guess every bird has ears really. It should be called the metaphorically eared grebe.

Here is what a winter eared grebe looks like

And here are some gorgeous shots Tom got of them last weekend (yes, with the toilet-tube-o-scope):

Sassy McBigForehead:

Here you can see the big lobed feet typical of grebes:

And this one's just pretty. Worth clicking to see larger, it came out pretty crisp.

Yawn and foot stretch!

I have never heard an eared grebe make a sound. It's probably saving up its squawking energy for when it reaches its breeding grounds, probably some inland freshwater pond.