I'm guessing with trained eyes like the ones here at BPN it won't be hard to find the second baby Loon. :)
Another from a series of images to come. Most of the Loons on this lake were very calm and seemingly comfortable with my presence in there territory (there were exceptions and they didn't get photographed).
These babies took turns getting on and off there parents, this was one of the only images were I got one under the wing and one up on the back. This image was captured at 6:26 AM.