A bird I spied up in the oak,
Shadows therein did give him cloak.
Trilling whistles did me engage,
O joy!  Freedom from gilded cage.

I thrilled to watch you through my scope.
Your charming antics brought me hope.
Petulant warble as if onstage,
O joy!  Freedom from gilded cage.

Bib, crown and nape of rufous hue,
With wings of deepest, dusky blue.
Who are you…little spirit sage?
O joy!  Freedom from gilded cage.

Kyrielle

A Kyrielle is a French form of rhyming poetry written in quatrains (a stanza consisting of 4 lines), and each quatrain contains a repeating line or phrase as a refrain (usually appearing as the last line of each stanza).  Each line within the poem consists of only eight syllables.  There is no limit to the amount of stanzas a Kyrielle may have, but three is considered the accepted minimum.

Some popular rhyming schemes for a Kyrielle are:  aabB, ccbB, ddbB, with B being the repeated line, or abaB, cbcB, dbdB.

Mixing up the rhyme scheme is possible for an unusual pattern of:  axaZ, bxbZ, cxcZ, dxdZ, etc. with Z being the repeated line.  The rhyme pattern is completely up to the poet.