What does it all mean? Why do birds sing? How? And how can we figure out who exactly is singing what?
15 of the most sweet-sounding songbirds in Britain
Scientists eavesdrop on a South American forest to find a missing bird
Sand Bluff Bird Observatory
The Surprisingly Common Bobcat
Lazarus of the Amphibian World
Bird Songs
Why do birds sing early in the morning? The dawn chorus explained
Some birds sing the same song for hundreds of thousands of years
All About Bird Songs: Nature's Symphony - Birds and Blooms
Handle with Care! Snapping Turtles
Bird Song
I Know Why the Caged Bird Sings - Wikipedia
Birds with more complex vocal skills are better problem-solvers
Cedar waxwing(2)_Nigel Kent