those pictures were on auto- all the ones of the baby were on auto, for good reason. It was a once in a lifetime chance to photograph him and his little details.
That is actually the exact circumstance where I advocate shooting in auto: when you would otherwise miss the shot if you took the time to fiddle with the settings.
Normally, for me it happens when children are involved. As you get more and more familiar with your camera, it happens less and less. Most people can turn the dial to green box faster than they can set the settings. So, when there is something happening right now, that if I delay, I will miss, I go to the green box. Note: there is next to no agreement with this opinion of mine on this forum; the consensus is auto should never be used (there is little consensus on what should be used: Av or M, but most agree on green box = never). As you get more and more familiar with the camera, resorting to auto will happen less and less. I find myself there only a few times a year, but when you need it, it is invaluable.