When will hey fly up to roost?

[Stoney22]

jeeze its aggravatin me at this point, eac night i go out and put my four hens up, to are about 5 weeks old and the otheres are aproaching somewhere id say of about 10 weeks. i think the 2 10 week old NH Reds should be flying up, what do you all think and if not when will they?

 

[ninabeast]

Mine went up to theirs almost right away (5-6 weeks) and it's four feet off the ground. That said, not all the breeds did. The Light Brahmas (who are not so light, weight-wise) still roost below, and regularly get droppings on their lovely white feathers from the "lighter" hens roosting above them...

I have heard posters here speak of hens that didn't roost until they were almost ready to lay.