According to the Department of Biology at Texas A&M, the University of Texas at Austin and Bat Conservation International; Bats can carry a tune! Not just any tune, though. They sing for love, of course! The researchers involved recorded these 'love songs of bats' and found that they are an effect way for a bat to catch a mate. The article also notes that, even though they can 'sing' it is very difficult for human ears to pick up on. Sort of like that high pitched whistle that only dogs can hear. I knew that bats used echo-location or sonar to communicate and such, but a singing bat seems like something from a Disney movie (hence the picture). The article best describes this phenomena. Saying, "The sounds are made in a specific, arranged pattern to form a song, and there are actually organized sequences within each phrase. They are made to attract and lure nearby females. "
The article also makes an interesting note, saying that whales use songs to lure mates in as well. Come to think of it, when ever I have heard a whale make a noise, it sort of sounded like singing. Again, it is a high pitched noise that is in different tones, ranges, etc. However, with a whale the 'songs' are more likely to be heard by human ears with out the use of expensive recording equipment.
Article found here
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