Sadly there is no way to know if parents will feed babys.
a bit of background first... I designed and had built a wonderful
inside/outside aviary not knowing I would soon have health
issues. I turned it over to my daughter 2 years ago. She is busy
packing to move so I (Nana) get to feed spring babys.
Normally I pull all babys at 10 days old. There is one pair of
quakers (blue male/split to blue/female) that do not always feed
babys and I knew this when I got them. Usually they will feed 2
and we know to pull others after that as they hatch. This time we
chose to pull all babys shortly after hatching. I've been feeding
3 around the clock for what seems like weeks ( *yawn* ). The 4th
and last egg of this clutch was due to hatch yesterday and this
morning did have the inside starting of cracking but my daughter
and I decided to not take a chance and I brought it inside. Long
story short I did a partial assist. Baby is now kicking up a
storm. In about an hour I will give it some diluted formula and
it will soon catch up with others being fed every 1 1/2 to 2 hours.
If you feel comfortable leaving your four that's good. Many
judgement calls for us to make.
I will try to check in more often but we just never know with
weather and now with me feeding babys. Oh by the way these 4 all
have white down. They could be blue or green/split to blue.
Next clutch is 7 green quakers but thankfully the parents feed
well. 2 nest boxes of tiel eggs going also to be pull at 10 days
old. busy busy time.
Wishing you much success,