Bird Watching: DAILY PICS VOL. 24, 1 by Grasmussen

Grasmussen wrote:
In this picture the two Swans facing right are Trumpeters. The four Swans facing left are Tundra Swans, three adults and one cygnet. The cygnets of both species are gray with pink bills. The only way I know this is a Tundra Swan cygnet, is because this is one of three which always stayed close to the Tundra Swans. The yellow spot in front of the eye can be difficult to see, depending on the light. I actually lost track of the Tundra Swans, among a dozen or more Trumpeters, while I was setting the tripod up.