Chapter seven contains a lot of collectables. Practically every platform you encounter will contain a chest.
The first chest will be at the top of the first mountain. Beware of the strong wind that can knock you away.
The second chest is located inside the mountain. Fly close to the wall to reveal the entrance inside. The box awaits you there.
At the bottom left of the mountain is the next one. Watch out for the strong wind.
There is another chest inside the second mountain.
There is another one at the top of the mountain, behind the thorns. Be careful, because the wind can push you on the spikes.
You will find the message at the very, on the left. It is hidden in the water stream.
Bounce off the first mountain and soar high. You will reach the platform. At the bottom of the platform is a chest.
Fly to the left. You will find another platform. There is also a chest waiting for you.
If you fly higher, you will find the next platform with another chest.
When you fly up from the platform to the right you will appear in a place where there are multiple chests. On the right-hand side from the entrance there will be a chest.
Fly upward from the chest. You will find a stone there.
To get another chest go through the manhole. To do this, illuminate the stone with Igniculus.
The next is right beside you. Just hover to the right.
The stone is located on the left hand side behind the next crossing.
You can find the chest when you fly downwards and to the left.
The next is right beside you. Just to the left.
You will find the rest in the next location; to get there you have to fly up. When you're there, run left. At the end, under the waterfall, you will get a chest.
To find the next one you have to fly left from where you meet your friends.
You'll see the platforms on the left and right when you head up a bit. There are chests on both of them.
Still a bit higher there are two more platforms on both sides of the location. There are also chests on both of them.
The message is located at the top of the location.