Looks like this may be (more or less) the official text sung in the Church of God of Prophecy...

THE GREAT SPECKLED BIRD

What a beautiful thought I am thinking
concerning The Great Speckled Bird.
Remember Her name is recorded,
on the pages of God’s Holy Word.
All the other birds flocking around Her,
and She is despised by the squad.
And The Great Speckled Bird in the Bible
Represents you The Great Church of God.

With all other churches against Her,
they envy Her Glory and Fame.
They hate Her because She is Chosen,
and has never denied His dear name.
Desiring to lower Her Standard
they watch every move that She makes.
They love to find fault with Her teaching
but really they find no mistakes.

In the presence of all Her despisers
with songs never uttered before,
She’ll arise and be gone in a moment
till the great tribulations are over.
I am glad that I learned of Her meekness.
I am glad that my name inion Her Book
for I want to be one never fearing
on the face of our Savior to look.

Her wings shelter men of all nations,
of earth’s every color and race.
She has gathered them all in Her keeping
to present to the Lord face to face.
When Christ cometh descending from Heaven
on a cloud as He writes in His Word,
I’ll be joyfully carried to meet Him
on The Wings Of The Great Speckled Bird.

She is spreading Her wings for a journey
She is going to take by and by.
When the great trumpet sounds in the morning
She will meet Her dear Lord in the sky.