This is going to be an extra credit question on an upcoming exam and I can't seem to find the answer. I know its not a mute swan though because i know first hand that they hiss (devil bird!). I've heard that maybe the secretary bird can't, but I can't seem to find anything searching the web. Anyone with real Ornithological knowledge know the answer?
2006-11-07 07:17:24 · 2 answers · asked by Future zookeeper 2 in Science & Mathematics ➔ Zoology
Here's all I could find ... maybe it can get you started?
White Stork - a silent bird - White Storks hardly ever give voice. In the world of birds it is an uncommon situation. Stork’s lower larynx – birds’ vocal organ – is so retarded in development that it does not produce sounds.
http://birds.poland.pl/didyou/article,White_Stork_a_silent_bird,id,95312.htm
2006-11-07 08:23:06 · answer #1 · answered by Bonny K 4 · 0⤊ 0⤋
humming bird?
2006-11-07 07:29:38 · answer #2 · answered by Anonymous · 0⤊ 1⤋