There is no doubt that Archaeopteryx is unique. It had a generally reptilian skeleton with a tail made up of extended vertebrae, teeth, and claws on its wings. But it also had 100% modern feathers showing the asymmetry of flight feathers. It is considered the first bird, but those advocating the dinosaur–bird link want to make Archaeopteryx a feathered dinosaur. In fact many of the so-called feathered dinosaurs resemble Archaeopteryx.
Feathery Fossil Hints Dinosaur-Bird Link - The New York Times
Cornell has an amazing collection of bird sounds. Greg Budney show’s you inside the library Bird songs from the Americas and around the world. here.
An wide selection of bird sound with a few sentences about each.
– European Birds Songs, Calls and Sonagrams.
– an impressive array of links to bird sounds sites.
Bird Life International’s Bird Links to the World – . Many links to world sounds.
Learn to and lots more!
Also read about a great app from Pocket Chirp for making on your iPhone.
From the Oakland Museum
New Dinosaur-Bird Link? | Answers in Genesis
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Ancient Feathered Animal Challenges Dinosaur-Bird Link - ScienceDaily