I didn't know there was a poem; I thought there was only a book. Thanks Anne.

I read the poem but that brought about questions:

Do all caged birds have clipped wings?
And it doesn't seem that all caged birds have their feet tied.

But I'm glad to know they sing of freedom; for that question didn't seem to be satisfied from reading the book.
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https://www.amazon.com/author/bonnie.mill-lemke
https://kdp.amazon.com/en_US/bookshelf