Mute Swans and cygnets

Howdee all,

A week ago I saw this group of swans in New London.

And I am wondering why the cygnets keep a leg on their back..do they get tired easily? are they just resting? I know one of my Birdie friends can tell me.

See the dark one with its leg on it back?

And why is one cygnet so much darker?

I never noticed the adults doing that..so I am assuming it is something the young does. So ..thank you in advance..for I know i will get an answer here..You guys are like Google without Googling! tee hee..

Off for a Spa Day..my little sister turned 50 this year..and we are celebrating!

Click on this photo below to view more birds!