ML630070378

觀察細節

~130ms long, burry, polyphonic ZEET with drop in pitch and 2-4 diverging partials, more thickly modulated toward end (~200 mods/s), starts at ~5-6kHz. Mistaken for Reed Bunting flight call at first but after study of XC523208 (REBU) vs XC919934 (YELL) it is evident that REBU is not polyphonic and has strong seahorse-shaped underslurred consonant at start, with top pitch of 5kHz, bottom pitch 3.5 kHz.