At what age do chicks typically figure out the ramp to the pop door?

[ONSTAD1]

So here is a rather random question... pre-planning of sorts.

What is the youngest you have seen a chick figure out a ramp to a pop door? Mind you mine are brooding in the coop. I'm wondering when I can give them the run of the run (ability to come and go from the coop as they please). At 1.5 weeks I'm letting them forage in the dirt of the run for 15-20 min a day....scratching, dustdathing, playing keep away with a centipede ... so fun to watch.

mo

 

[ChickensAreSweet]

Three weeks of age is when I trust my chicks to go back up the ramp and not stay down on the ground freezing.

 

[Harley Demag]

when can i realistically put the chicks in the coop? It has been very warm and they are getting their feathers soo quickly!