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The 264 pages that link to Sexual dimorphism, each with the reason it gives.

• Domestic canaryRelated: Male canaries generally sing more elaborate songs, a difference central to their keeping.

• Domesticated quailRelated: Adult Japanese quail can often be sexed by breast plumage and coloration.

• DytiscusRelated: In some Dytiscus species, females have either smooth or grooved elytra, unlike the smooth-winged males.

• Eastern moleRelated: Male eastern moles are generally larger than females, especially in the breeding season.

• EmpusidaeRelated: In several empusid species, males and females differ in wing development and body form.

• European fallow deerRelated: Males are larger and grow antlers; females lack antlers.

• European robinCompared with: Male and female European robins look alike, making plumage a poor guide to sex.

• European spadefoot toadRelated: Adult males and females differ in features including body size and reproductive structures.

• Fish length–weight relationshipRelated: Sex-specific body shapes can make a pooled length–weight equation misleading.

• Fish pregnancyRelated: Pregnancy can produce visible abdominal changes that distinguish gravid females in some live-bearing fish.

• FootballfishRelated: In some anglerfish, extreme sex differences complicate what can be inferred from isolated specimens.

• Four-eyed fishRelated: In Anableps, male and female reproductive anatomy differs conspicuously.

• Gang-gang cockatooRelated: Male red plumage and mostly gray female plumage make the species easy to distinguish by sex.

• Gonepteryx rhamniRelated: Male and female brimstones differ notably in wing colour.

• Greater kuduRelated: Male greater kudus grow horns and are substantially larger than females.

• Greater painted-snipeRelated: The female's brighter plumage and larger size make the species' reversed sex roles visible.

• Grey junglefowlRelated: Male and female grey junglefowl differ in plumage and coloration.

• Ground hornbillRelated: In ground hornbills, bare skin colors help distinguish the sexes.

• GynandromorphismCompared with: Dimorphism describes differences between individuals, whereas gynandromorphism combines sex-associated traits within one individual.

• HeteropteryxRelated: In Heteropteryx dilatata, the sexes differ markedly in size, shape, and color.

• Himalayan monalRelated: The male’s bright colors contrast with the female’s mostly brown plumage.

• Homarus gammarusRelated: Differences in abdomen shape and reproductive structures help distinguish its sexes.

• HydrosaurusRelated: Differences in crest development and body size can shape how male and female sailfin lizards are identified.

• IcteridRelated: Many icterids, including several orioles and blackbirds, differ strongly by sex.

• IctonychinaeRelated: Body-size differences between the sexes occur in several ictonychine species.

• Jackson's chameleonRelated: The prominent horns are chiefly a male trait in this species.

• King quailRelated: Male and female king quails differ noticeably in plumage, especially in breeding coloration.

• Little owlRelated: Male and female little owls look alike, making plumage alone unreliable for sexing them.

• Maja squinadoRelated: Adult males and females differ in features such as claw size and abdomen shape.

• Moa-naloRelated: Some moa-nalo fossils show marked size differences interpreted as possible sex differences.

• New World barbetRelated: In several barbet species, sexes differ in plumage coloration.

• Northern mockingbirdRelated: The sexes look similar, making behavior and subtle measurements more useful than plumage for distinguishing them.

• OdobenocetopsRelated: The tusks differ in length and orientation between the two named species, raising questions about their biological roles.

• Old World orioleRelated: Many oriole species show sex-based differences in plumage.

• Organism formRelated: It shows how characteristic form can vary between members of one species.

• Panthera spelaeaRelated: Fossils suggest cave lions may have differed between the sexes in size and mane development.

• Pencil fishRelated: In some pencilfish species, males show stronger coloration than females.

• Père David's deerRelated: Males grow antlers and are generally larger than females.

• Philippine eagleRelated: Female Philippine eagles are substantially larger than males, a notable feature of their biology.

• PhylliidaeRelated: In some leaf insects, the sexes differ in wing development and body proportions.

• Poecilotheria metallicaRelated: Sexes differ in appearance, and mature males are generally less vividly blue.

• PogonaRelated: Body size and head proportions can differ between sexes in some bearded dragons.

• Pouched lampreyRelated: The subocular pouch is a conspicuous male-specific trait in this species.

• ProlibytheriumRelated: Differences between male and female skulls suggest its appendages varied by sex.

• Pyrrhocoris apterusRelated: Firebug populations provide examples for examining sex-linked variation in body traits.

• Red river hogRelated: Male red river hogs are generally larger and have more prominent facial warts.

• Resplendent quetzalRelated: Male and female resplendent quetzals differ in coloration and tail length.

• Ribbon eelRelated: Color and some body features vary between mature ribbon eel sexes.

• Rufous hummingbirdRelated: Male and female rufous hummingbirds differ strongly in plumage coloration.

• SemnopithecusRelated: Male and female langurs differ in body size and social roles.