30 Sep '12, 12pm

Wake-up Calls: Conservationist in 1930s took copious notes of bird chirps beginning just b4 sunrise each am. Listen:

Wake-up Calls: Conservationist in 1930s took copious notes of bird chirps beginning just b4 sunrise each am. Listen:

TEMPLE: His notes were taken in a shorthand and what he noted was the time at which he first heard each bird joining the chorus. And he then took notes on how frequently he heard each species singing. So with that information, we could actually put the birds into the proper sequence and the proper timing of their calls but it went further than that. If you listen to the tape that we produced, in stereo, we've actually placed the birds in the soundscape in the relative positions that they should be in based on Aldo Leopold's territory maps. So the birds that appear to be coming from the left are birds of the field and prairie. The birds that are coming from the right are birds associated with the woodland and the birds in the middle are the ones associated with the edge in between the field and the woods.

Full article: http://www.loe.org/shows/segments.html?programID=12-P13-0...

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