Should i leave this robin nest where it is?

We found this robin nest tucked up between old plant pots and our summer house. It's quite well shielded from any cat/fox activity i think, but we're concerned that if the babies start making hungry noises, then cats might be alerted. Tempted to leave it where it is, the mum returns regularly and is seen on the nest frequently.  We can count four chicks, but saw five eggs last week.  Thanks, Tony