2 week old chicks starting to roost. Suggestions for dowel size?

[CoopsNPoops]

One of the first things i learned about chickens when i was young, was that chickens prefer to roost flat footed and for the roost to be just as wide or wider than their foot. Gives them more space to prop their bodies on for even more support and balance. Much like they nap on the ground. Im not sure how accurate it is cause ive never researched it, its just a rule of thumb that's stuck with me. Ive never thought about trying anything else i suppose. Makes me want to go out to the coop and see if they're laying flat footed or if they have their toes off the egde to curl them onto it. I'm going to check, lol.

Well, all but two had their toes hanging off the edge. I guess the teachings i learned long ago and stored in the back of my mind (without second thought) were inaccurate, lol.