Finding one like this is total luck. And you need a long-angled lens.
This one just bounded out of the willows, saw me, and stopped for a look.
This one knew something was around but because I stood still it couldn’t find me. Looked right at me and decided I was nothing to worry about.
These were not twins. I suspect their mothers left them to gambol and went elsewhere for a nap.
Not difficult to figure out the name.