Forbes contributors publish independent expert analyses and insights. GrrlScientist writes about evolution, ecology, behavior and health. Many of us are familiar with the behaviors of lions. When a ...

A green-rumpled parrotlet widow and her nestlings. The behavior of the nestlings — spilling out of the cavity begging for food — indicates that they aren't getting enough food. A team of University of ...

You may be familiar with the large, talking green bird known as a parrot. There's another parrot type called parrotlet, which is much smaller than the birds you’re familiar with. Parrotlets can also ...