How old do these chicks look to you?

I am attaching pics of my new chicks, said to be hatched 3/8 and are 24 days old today - a little over 3 weeks. I don't know... they are large to me compared to pics of other 3 week old chicks and I am wondering if this was a mistaken date. I got them from a local feed store who sources from good breeders. I've put a soda can in the brooder for scale. Do they look older to you? The Barred Rock flew out of the brooder today and was standing on the side! They have lots of feathers too. They almost look like 5 week olds to me! I want to transition them outside sooner rather than later, and the feed store pulled the records and said they came in on 3/10 and should have been hatched only a couple days earlier. Keywords are "should have been" born only a couple days earlier - but what if they weren't and were a week old already when they got them?

These are my first babies so I don't have a personal frame of reference, but from the pics I see online, they are quite larger and feathers out more than a 3 week old. Thoughts?

Buffed Orpington
Barred Rock
Delaware

You feed them well and lots of TLC, and they respond by growing well. I would agree with the 3 week+ age.
WISHING YOU BEST and

Thank you Cavemanrich

Mine were hatched 3/9 and look thr same as yours

Thanks mrv19!