My little Featherball

Three days ago I found a helpless, near to death birdie in my garden.
At first I wasn't so sure what bird it was but now I know that it's a Common Swift / Eurasian Swift or in Germany called Mauersegler. (apus apus)
The first day it was really weak and limp because it was dehydrated. (I found it lying in the sun. Swifts often fall out of their nests when it's too hot. I also found it's sibling already dead.).
If you have experience with Swifts tell me. It's my first time raising up a Swift. The last two years I successfully raised a sparrow and a swallow.

Information:
The bird is way better now. It even makes noises when it's hungry and hops around in it's box

EDIT
I started to write a swift-diary in my journal. If you want to be informed, check it out. [link]