Hey!
I will be giving your map a +0 as of right now for the following reasons:
First of all the map is fairly original, although one of the more popular theme of builds on parkour revolve around a tree, there is no maps that have a parrot theme. The build is also incredibly attractive, and very well done. My main concerns about your map is the parkour; although the parkour fits the hard difficulty you're aiming for, I found that the parkour could be a bit more varied, as the jumps mainly consist of ladders, fences/walls, and normal block jumps, another thing that could be improved on is the use of floating jumps, in some ways it can make the build look somewhat messy or unattractive and lastly, I think the map would be a good idea to add some more directions to your build, as well as going through and testing your jumps at speed 1 after finishing building as I found myself either getting lost, or stuck on an impossible jump.
To improve on these things I strongly recommend looking at some other maps and taking different kinds of jumps to put into your own map, use more blocks like slime, trapdoors, minecarts, etc. I also think it would be beneficial to use more of the build to your advantage to prevent floating jumps and overall make the make more fun and interesting to do. And as I said above, I think adding more signs / heads to indicate where to go and going through your map with speed 1 would be a great idea.
I wish you guys the best of luck <3
Luci