LL WOLF 1964 Aechmophorus mexicanus July 25 Canon de Lobos, Pri. E. Cuernavaca, Morelos, Mexico 4800-44. Song ... L .... given from exposed perches 7 to >30 feet tu tu twee-uu, spluttering trill then t-wee-oo up: tail flicks in time with tu-tu notes - distinctly flicked -> very rapidly during trill. 0825- sitting on top of 25 foot oak at edge of wooded gully singing ~ once every 15 seconds. 0825- left tree + flew off 40+ yds to NNE (uphill + into center of gully) Continued singing.