In the largest study of its kind, researchers at the Florida Museum of Natural History have used data from a 120-year-old ...

Tamara Ávila Atagua of The Sloth Conservation Foundation builds rope bridges between trees to help Costa Rican sloths remain ...

What Does a Tree Swallow Look Like? The tree swallow is typically a straightforward enough bird to identify, even for newer birders. With shiny, almost iridescent teal upperparts and white below, ...