I have a 2018 Bird and the attachment for screens is a track on the roller for the awning. As to a screen room most of us with Hummingbirds don't. In my opinion the awning arms are too weak and the amount of time to take the screen down before leaving the campsite or wind are a good argument against attaching to the camper. This isn't a comment against the Hummingbird but against the flimsy awnings common to many small campers. I don't even leave my awning out unless I'm nearby.
I my case I use a Clam Quickset Escape tent, others use the Gazelle. These can be left up under most conditions.
There is also a Hummingbird Facebook https://www.facebook.com/groups/Humm...?ref=bookmarks