Genetic colour polymorphisms are widespread across animals and often subjected to
complex selection regimes. Traditionally, colour morphs were used as simple visual markers …

Studies on polymorphisms have been foundational to our understanding of evolution. The
presence of different phenotypic morphs is sometimes considered a precursor to speciation …

Species richness varies widely across the tree of life, and there is great interest in identifying
ecological, geographic, and other factors that affect rates of species proliferation. Recent …

Bird song has historically been considered an almost exclusively male trait, an observation
fundamental to the formulation of Darwin's theory of sexual selection. Like other male …

Synopsis “Sex” is often used to describe a suite of phenotypic and genotypic traits of an
organism related to reproduction. However, these traits—gamete type, chromosomal …

The increase in species richness from the poles to the tropics, referred to as the latitudinal
diversity gradient, is one of the most ubiquitous biodiversity patterns in the natural world …

Predicting how biodiversity will be affected and will respond to human‐induced
environmental changes is one of the most critical challenges facing ecologists today. Here …

Marsupials exhibit great diversity in ecology and morphology. However, compared with their
sister group, the placental mammals, our understanding of many aspects of marsupial …

Polymorphic species, in which multiple variants coexist within a population, are often used
as model systems in evolutionary biology. Recent research has been dominated by the …

As top predators, falcons possess unique morphological, physiological and behavioral
adaptations that allow them to be successful hunters: for example, the peregrine is …