Response to Kroodsma's critique of banded wren song performance research

- Kroodsma's criticisms of song performance studies in the banded wren are erroneous.
- Banded wrens use complex delivery patterns of song types to negotiate boundaries.
- Males are repelled by playback of particularly high-performance songs.
- Trill rate increases during encounters in relation to aggressive motivation.
- One performance measure, trill note consistency, can inform receivers of male age.