To keep to one version or one translation alone is to put a robin redbreast in a cage.
From the guardian.co.uk
Trust us, it IS spring, despite that frozen robin redbreast you found on your lawn this morning.
From the timesunion.com
He would give a capital imitation of the way a robin-redbreast cocks his head on one side preliminary to a dash forward in the direction of a wriggling victim.