In my limited experience, I'd say that their behavior can change radically, and I imagine spending time with them later will work fine, especially if you can get one tame now to be a role model. My most skittish one, a 4 week old Easter Egger, this week flew out of the cage and landed on top of my head, after my lap filled with her buddies and the emptying cage seemed more scary than I did!
Only one now has not ventured out onto the scary person, another EE. And I have done no treat bribery. Yet. I expect that will turn the tide on the holdout.
Only one now has not ventured out onto the scary person, another EE. And I have done no treat bribery. Yet. I expect that will turn the tide on the holdout.