Tag Archive for 'Dimorphism'

Forensic facial reconstruction of another Australopithecus species - A. afarensis. Image credit: Cicero Moraes / CC BY-SA 3.0.

Australopithecus Males Were Much Larger than Females, Paleoanthropologist Says

Jul 30, 2025 by News Staff

Two extinct hominins, Australopithecus afarensis and Australopithecus africanus, were significantly more dimorphic than chimpanzees and modern humans;...

A bilaterally gynandromorphic green honeycreeper (Chlorophanes spiza) near Manizales, Colombia, May 20, 2022. Image credit: John Murillo.

Extremely Rare ‘Half Female, Half Male’ Honeycreeper Snapped in Colombia

Dec 12, 2023 by Natali Anderson

Ornithologists in Colombia have photographed a wild green honeycreeper (Chlorophanes spiza) with distinct half green, or female, and half blue, male, plumage. A...

The Lesser bird-of-paradise (Paradisaea minor) was one of 977 species examined by Prof Peter Dunn and his colleagues at the University of Wisconsin–Milwaukee in a worldwide study of the evolution of bird colors. Image credit: Reza Pratama / CC BY-SA 2.0.

Natural Selection Drives Evolution of Bird Colors, Say Scientists

Mar 30, 2015 by News Staff

In a worldwide study of the evolution of bird plumage coloration, a team of scientists led by Prof Peter Dunn of the University of Wisconsin-Milwaukee...