Puzzled By Birds: Day Three

From our diabolical secret laboratory, Kenn and Kim write: This is the third day in a row in which we reveal just a little more of our puzzle bird. If you can figure out what it is (and there’s an important new clue revealed today), post a comment to the blog. We’ll check the comments when we get back to the U.S., to see who got it first.

Here’s a hint: this is a bird that occurs regularly in the United States, and it’s even common there in some places. That narrows it down, right? One of about 750 species, rather than one out of about 10,000.