Here is the full list of all 11 Feather achievements worth 1,000 gamerscore. It takes around 0-0.5 hours to unlock all of the achievements on Xbox One.
Enjoy the passing of time
I don't know where my home is
Head in the clouds
I'll only fly away
I'm like a bird
Flying at the speed of light
Delicious and nutritious
I don't know where my soul is (soul is)
And I need you to know
The start of something beautiful
Take Flight