Archive for June, 2009

Open-Source Bats

Friday, June 12th, 2009

Bat calls, “songs” to keep to the theme of this blog, are hardly inarticulate shrieks. In fact, bat echolocation calls are finely honed sonar pulses and have a complex and time-varying structure. The audio and rather low-resolution spectrograms in my earlier postings should hint at that.

There’s a fair amount of interesting scientific research out focusing on bat echolocation, in a much more systematic and detailed way. I was delighted to find not only the article below, but an entire on-line journal whose content is completely free, readily accessible, and freely redistributable.
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Mortality

Friday, June 5th, 2009

Looks as if my explanation the other day for the high level of daytime excitement by the bats was both too pat and too optimistic.

It turns out that the individual whom I could see so clearly on the landing area of the bat house was not so much protective as in need of protection — this bat was injured and subsequently died.
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