Possible Clues:

• Occasionally, Thea picks up poem
• Japanese poem elevated sound of bird, when read out
• Japanese verse reporting shrill sound made by dove?
• After vacation, homework at uni contains first-class poem
• Japanese verse originally hidden away in Kyoto university
• Followers of every line of Anouilh play like folksy and lusty poetry
• Poem name whose singular and plural forms are the same
• Lines husband may like but with no margins
• It's found among 3, with fixed syllabic structure, similar to this
• Japanese terse verse