To investigate colour diversity among species, we first tested for correlations between sexual dichromatism and ten predictor variables. Sexual dichromatism decreased with body mass and wing ...

- a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision) ...

In the parlance of herpetologists, this type of dichromatism is “ontogenetic.” Most remarkable of all, though, are the frogs exhibiting dynamic dichromatism. They change color every mating ...

Their findings add to what is known about the genetics of sex-specific coloration in birds, and could aid in the study of how a sexually selected trait like dichromatism has evolved over time.

In many species, especially birds and butterflies, males are typically more colorful than females, a phenomenon known as dichromatism. In many dichromatic species, the more conspicuous sex is more ...

Forbes contributors publish independent expert analyses and insights. GrrlScientist writes about evolution, ecology, behavior and health. Sexual dimorphism — physical differences between the ...

Examples of dichromatism in fact were one of the issues that lead him to develop his theory of sexual selection, where elaborate male traits could evolve through female preference for conspicuous ...

Some birds evolved this sexual dichromatism as an adaptation related to mating and survival, but scientists still don’t understand how two birds of the same species, with almost identical ...

The paper M. Gazda et al., “A genetic mechanism for sexual dichromatism in birds,” Science, 368:1270–74, 2020. Male red siskins (Spinus cucullatus), a species of finch, flaunt orange-red bellies and ...

Today’s featured amphibian is the yellow toad, a creature whose method of reproduction is often studied. They are explosive breeders that exhibit dynamic sexual dichromatism. What does that mean?

Now, a team studying this so-called sexual dichromatism of songbirds have discovered a link between female coloration and migration. The findings, published in Proceedings of the Royal Society B ...