Possible Clues:

• Being in need, the saint made himself at home
• At home, the bird would need to be around the street
• Fitted inside one another, say set of tables
• Like some dolls
• Made a tree-house perhaps
• Need to be about to be canonised? That's for the birds
• Settle in comfortably like a bird
• Had to have made a home around the street
• Fitted one within another
• Progressively smaller, in a way