what combination of venting would work well with this...

[Urbanchickenranchers]

Hey everyone...I'm in the process of building my coop and am using a left over roof vent from our house. Aside from the following vent where else should I place venting?

http://i1222.photobucket.com/albums/dd488/syclops7/chickens/2011-07-09073148.jpg

 

[Frost Homestead]

On the sides of the top of your walls, right beneath the roof. like this:

https://www.backyardchickens.com/forum/uploads/33765_july_023.jpg