Unlike most other bird species, the brown-headed cowbird (Molothrus ater) lays its eggs in the nests of other bird species ...

Indicator species are living organisms that tell us that something has changed or is going to change in their environment. They can be easily observed, and studying them is considered a cost ...

Keystone species examples come in many shapes and sizes. Some are big (grizzly bears), some are small (starfish), and some are vegans (elephants). Learn more about keystone species and the entire ...

The Hell Creek Formation in what's now the Dakotas, Montana, and Wyoming was once home to some of the world's most beloved dinosaurs, like Triceratops and Tyrannosaurus rex (including SUE, one of ...

Examples of gram negative bacteria include enterobacter species [June 6 2022], salmonella species and pseudomonas species. Gram staining cannot be used reliably to assess bacterial phylogenetic ...