Robin Redbreast

We currently have three regular Robins in the garden - two of which are constantly chasing each other away but one of them seems more tolerant/tolerated so maybe two of them are a pair. They've not been coming to the garden for very long so I'm not yet able to tell them apart.

Didn't check the thermometer this morning, but there was a hard frost. The bird bath is now almost constantly frozen solid. We remove the ice, clean and then refill the bath but it starts to freeze again before we've even gone back inside. We've put plant pot saucers of fresh clean water on the lawn instead - they're much easier to empty (in the warm kitchen under a warm tap!).