Prudence dictates that I should put a question mark at the end of this post title, especially with a tough ID call like this...
...but tell me this isn't a White-faced Ibis.
The red eye and pink facial skin is glaring.
This was pronounced enough so that even with the heads hidden you can tell which is the odd bird out (and which is the Boat-tailed Grackle).
So I think I'll have to fill out some paperwork on this one for the NC Bird Records Committee. Luckily the area where it was found opens up to the public for the season starting the Friday, so maybe some others will be able to see it.