I heard this on the radio and had to share it, it's a poem about our quick-moving little bird, written as part of a 2017 collection protesting nature words removed from the latest edition of the Oxford Junior Dictionary for young readers: 

“When wren whirs from stone to furze the world around her slows, for wren is quick, so quick she blurs the air through which she flows. Yes. Rapid wren is needle. Rapid wren is pin. And wren’s song is sharp song, briar song, thorn song. And wren’s flight is dark flight, flick flight, light flight. Yes. Each wren etches, stitches, switches, glitches. Yes. Now you think you see wren. Now you know you don’t.”