Complex sentence: The male Shelley's Crimson-wing has bright red crown, face and back, with contrasting black wings and tail, as well as olive-yellow underparts with warmer tones on flanks and belly.
Split into simpler sentences: The male Shelley's Crimson-wing has bright red crown, face and back, with contrasting black wings and tail. Olive-yellow underparts with warmer tones on flanks and belly.