How active are day old chicks?

[Stevenson]

So, I realize these little chicks go through a lot to get out of the shell. I figure they will be pretty worn out and not willing to do much after they hatch, but the lip on my incubator shelf is only 1 1/2 inches tall and I am concerned that they could fall off. Is this possible, or is that enough height to keep the little guys and gals in the shelf?

This is the incubator:

If they were to fall off, it would be about a 6" drop. I am thinking that they won't but I would like to hear from everyone else.

 

[Ms.FuzzyButts]

They aren't real steady on their feet but they can scale 1 1/2" with no problem. But a 6" drop wont hurt them either.