Skip to main content

Female Birds Have Evolved Not to Sing?

Do you like to go outdoors in the morning, stretch your arms and listen to the birds singing?  Chances are the bird sounds come from male birds.  The "new" theory is that females evolved not to sing to protect their eggs and young from predators.  Is is only a theory of course.  There is no substantial proof.fairy-wrenIt is supported by one case say scientists.  The fairywren's clutch is considered the most likely to fall prey to a predator during breeding time because she sings constantly.  This is weak proof.  Birds like humans can choose to remain silent.  Why hasn't she evolved to remain silent when breeding?  There is a reason why fairy wren females sing while sitting on eggs.  They do so to "talk" to their mates, who answers back with a similar but slightly different song.
Quail eggs were planted in the field and a recording of fairywren chatter was played back.  We have a correlation folks: predators ate the eggs.  The more song played the more eggs were eaten.  Coincidence?  Perhaps!  If you bang on a can of pet food the dog comes running
◆ Biology by Ty Buchanan ◆
Australian Blog
●
        Australian Blog ★  Adventure Australia
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
fairywren female bird hen lay eggs young predator eaten sing song chatter male articles news politics economics society anthropology historiography history sociology
  fairywren female bird hen lay eggs young predator eaten sing song chatter male articles news politics economics society anthropology historiography history sociology people nations country asia europe africa u.s. south america central Mediterranean eastern western interesting funny technology free news

Labels

Labels:

Popular posts from this blog

Albert Einstein's Genius Was Due to His Unusual Brain

Albert Einstein wasn't only a genius her was a very odd human being. His brain shows peculiar differences from the norm; it had many more folds than the average person. This gave the brain a greater surface area. It is like using a larger computer to do calculations. Upon his father's death in 1955, Thomas Einstein gave the pathologist permission to preserve the brain of Albert Einstein. It was photographed then dissected into 2,000 ultra-thin slices. The slices and slides of them were later distributed to researchers. The brain had more neurons and glia cells, well outside of the normal range; pariental lobes were unusual in the pattern of ridges and grooves. Einstein only had a brain of average size. The area controlling the tongue and face was larger, as was the region that involves attention and planning. Overall, Einstein's brain was complex. Many people think in words. He said his thinking was like a physical activity. If selection based on "healthy...
Read more
  Home-made saucer that flies down the road.
Read more

Natural History Museum Human Evolution Gallery

 The Human Evolution gallery at Natural History explores the origins of Homo sapiens by tracing our lineage back to when it separated from that of our closest living relatives, the bonobos and chimpanzees. Around 200,000 years ago, Africa was where modern humans developed. They have smaller faces and brow ridges, a chin that is more prominent than that of other ancient humans, and a brain case that is higher and more rounded. Modern human fossils from Israel (around 100,000 years old), Africa (around 195,000 years old), and Australia (around 12,000 years old) are among the casts on display. These fossils demonstrate that typical characteristics of modern humans evolved over time rather than emerging fully formed from Africa. They also suggest that at least two waves of people leaving Africa may have occurred, one about 100,000 years ago and the other about 60,000 years ago. We are all descendants of those who left during that second migration wave outside of Africa. Source: Natural...
Read more