The horned grebe is an endangered bird in Canada. This page gives basic facts about this wetland bird, and describes efforts to save the species from extinction.

Conservation success stories are now evident all over the world, attesting to the resilience that bird populations can exhibit when agents causing their declines are removed, and when birth and death rates come back into balance. Read...

[Free Registration/Login may be required to access all resource tools.] How does genetic variation protect species from extinction? Understand sexual reproduction and the importance of both random fertilization and independent assortment.

[Free Registration/Login may be required to access all resource tools.] The two periods of the Cenozoic Era, Tertiary and Quaternary, granted the mammals the time and space to evolve since the dinosaurs became extinct.

[Free Registration/Login may be required to access all resource tools.] In this module students will study competition in the sense of organisms competing for the same space, food, or water for survival. Understand how interspecific...

The original text and artwork from Birds of America by John James Audubon, an 1840 edition. Includes families of birds and an alphabetical listing of birds. A section of now-extinct birds and one of state birds have been added.

Learn all about the black, white, Indian, Javan and Sumatran rhinos. Great links and information on rhinos. This organization works to save the rhinoceros from extinction. Much of their work centers on efforts to combat poaching.

Because of Hawaii's isolation, endemic species evolved in their own unique way. With the arrival of foreigners and colonization, new species were introduced to the islands. The result being a crisis within the Hawaiian ecosystem,...

[Free Registration/Login Required] This passage from the American Museum of Natural History is about the discovery and study of bones from Pterosaurs, extinct flying reptiles that are not exactly dinosaurs or birds. A question set, a...

This is an extensive learning module on biodiversity and its decline. It looks at ways biodiversity is threatened, the possibility of another mass extinction, the causes and consequences of habitat loss, factors that drive biodiversity...

Did you know parts of our body was inherited from distant animal ancestors? In this interactive students will investigate different anatomical features of the human body to reveal our evolutionary history. Learn how humans share...

Birds have them, and so did some species of extinct dinosaurs. They're feathers. They come in different shapes and sizes, all colors, and they enable birds to fly. Lots of information can be found in this article.

Students explore the effects that ecosystem disruptions can have on animal populations. They learn about the disruptions that have driven three species-the Madagascar fish eagle, the Iberian lynx, and the rowi kiwi, to the brink of...

Inventing isn't just about coming up with a great idea; that's the easy part! There's also the matter of turning an idea into a product that sells enough to recoup the cost of putting it on the market. And there's the ever-present...

Endangered species are animals, plants or other life forms facing a high risk of extinction in the wild. Learn about some endangered species in Wisconsin.

Three opposing views about the disappearance of the "megafauna" in North America. What really happened to the wooly mammoth, mastadon, saber-toothed tiger, among other animals?