Juliet hatch 3 cygnets three weeks ago. I noticed all three when in the water have one leg on their backs. I've seen adult swans rest their leg on their back but never cygnets 3 weeks old.

The cygnets have been on Mazuri grower pellets for 3 which has 20% protein which has been stopped of today. Now they will go to Mazuri Waterfowl Maintenance. Could all three have slipped tendon? I've only seen them swimming, not walking. Thanks for your help!

Betty