He's getting better - he went out to have a little look around and to pick on some pebbles but now he's back. Guy has a hard time staying on the eggs/chicks past a certain length of time - fortunately, the hardwiring seems to be kicking in and overcoming his natural inclination to wander off.
The air temperature is warm so no worries for the chick if left uncovered for short periods of time. When the sun comes around however, he or she better keep their butts on the kid to keep him/her cool, it is a warm sunny day today!