http://www.macroevolution.net/cultural-evolution.html#.Uv2YBWTrWic
Nature of science themes: Science is collaborative, science is based on evidence, person's view and experience can influence data
Thursday, April 24, 2014
Singing Birds
According to this article, male Savannah Sparrows are changing their tune. The songs that they sing have changed from 30 years ago. Some scientist collaborated with each other and compared to song they sang about 30 years ago and a recent one and found they are different. The changes in the birds singing somewhat resembles the changing of human language over time. The sparrows added new clicks in the middle of their song and the ending trill is shorter. The researchers think that the shorter trill at the end is because females prefer it when they found out males with shorter trills had a higher reproductive rate.
http://www.macroevolution.net/cultural-evolution.html#.Uv2YBWTrWic
Nature of science themes: Science is collaborative, science is based on evidence, person's view and experience can influence data
http://www.macroevolution.net/cultural-evolution.html#.Uv2YBWTrWic
Nature of science themes: Science is collaborative, science is based on evidence, person's view and experience can influence data
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I think this is very interesting. It shows what we just went over in class about natural selection. The males with the shorter trills reproduced and passed this trait on to their offspring. It is cool to be able to see an actual example of this.
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