How do I completely close open side of patio/pergola?

[rahulrenga]

 I have temporarily installed this blind, but it isn’t an ideal solution. I’d like to fully close off the open side to prevent birds and possums from entering my patio area. Could you recommend a solution? I’d like to maintain flexibility by incorporating access to the area in the form of a gate or door. Additionally, I’d prefer if any open gaps could be completely sealed.