A green-rumped parrotlet (Forpus passerinus), widow and her nestlings. When the nestlings spill out of the nest cavity begging for food as these chicks are, this indicates that they aren't getting ...

Infanticide and adoption in the animal kingdom have long puzzled scientists. While both males and females of many species are known to kill the babies of their rivals to secure sexual or social ...

Pacific parrotlets are highly popular among bird owners. While they have a strong voice, they can't scream or talk as well as other bigger parrot species. Thanks to their quiet nature and smaller size ...

Competition over love and real estate drives two extreme behaviors in green-rumped parrotlets, a new study finds—either caring for or killing one another’s babies. Infanticide and adoption in the ...

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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 ...

Infanticide and adoption in the animal kingdom have long puzzled scientists. While both males and females of many species are known to kill the babies of their rivals to secure sexual or social ...

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 ...