New chickens...are they healthy? Is this normal?

[Aapomp831]

Idk about the vent; you’ll have to keep an eye on it. But their combs are fine. The white socks toy see are just dry skin, which is perfectly normal this time of year.

 

[Aapomp831]

I ended up putting the new chickens in an old coop for now. It's really too small so I'll have to let them free range during the day. It's a coop I used to grow chicks out in.

Over the 30 days what am I supposed to be looking for that will tell me if these girls have disease or parasites?

Watch their poop, and look for general sickness such a as sneezing, wheezing.