Visakha

For this week's quiz we're taking to the water to cool off. One great way to identify waterfowl is to concentrate on where the white markings are, according to a new system developed by the Cornell Lab's ID expert Kevin McGowan (more on that here http://bit.ly/1HGtk49). Do you know the name of this boldly marked species? We'll post the answer at the end of the day. Many thanks to Larry Kirtley for sharing this photo, taken on Lake Ontario.