Golden-fronted Woodpecker

The male is in the first two photos eating some seed, and the female is in the last three photos taking a drink of water. Both sexes have a black and white striped back with a solid gray belly. They also both have a large yellow patch on the back of the head and a small yellow patch at the base of the bill, but the male is distinguished from the female by having a red patch on top of the head. I'm not sure what the male was doing to get his chest so dirty, but I've never seen one look like that before.