Covered in Feathers?

(Psalm 91:4 NLT) "...He will shelter you with his feathers..."

Huh? What kind of sheltering can God do with feathers? That was my question to Him this morning, during my daily reading. This verse jumped off the page and lodged itself in my muddled brain, begging for clarification. I know God can do anything He wants, but why would He choose to use feathers?

My trains (yes, I mean multiple) of thought while searching for clarification:

Feathers...soft, inviting, definitely not something I would choose to make a shelter out of, especially if there are any rocks or wood lying around.
Is this related to God's character?
Maybe a different translation will help.
God bless America, where I can have several translations at my disposal on my nightstand without persecution.
"He will cover you with his feathers..." (NIV)
Cover, shelter, cover, shelter
Like the blood of Christ covers our sins?
Hmm...back to feathers
I know ostriches were pursued for their feathers, to be used for headdresses and shield ornaments.
So they must be beautiful.
Last I checked the "world famous" Topeka Zoo didn't have any ostriches, so I can't vouch.
People are drawn to beautiful things.
But what about, oh, say, eagle feathers?
I found a quote from Pliny (who was 10 when Jesus was crucified) that said eagle feathers were so powerful that if laid with any other, the eagle feathers would devour and consume all the rest.
So God rescues us from our troubles (taken from the previous verse), devours the sin in our lives, leaving us covered in His beauty. Now that is cool. Cover me with your feathers, Lord!

Chew on this and let me know if He reveals anything different to you.