On the homepage ( Avian Avenue Parrot Forum - you can click the site logo to get there from anywhere on this website) scroll down and you will see all of the different forums. I have moved most to Bird Boulevard for you
There are 3 lines top left hand corner (under avian avenue sign up top of page) click on that. Then click on forum and it will open up all the different topics/sections there are to visit.
Edit: I’m on my phone and that’s how I get to it. Zara left you the link even easier