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sexual selection

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“Pretty Cool If You Ask Me”: Perfectly Preserved 121-Million-Year-Old “Feather Dragon” Fossil Reveals New Species With Incredibly Long Tail FeathersA incredibly well preserved fossil bird with very long tail feathers on a pale rock.

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“Pretty Cool If You Ask Me”: Perfectly Preserved 121-Million-Year-Old “Feather Dragon” Fossil Reveals New Species With Incredibly Long Tail FeathersA incredibly well preserved fossil bird with very long tail feathers on a pale rock.
nature-iconPalaeontology

“Pretty Cool If You Ask Me”: Perfectly Preserved 121-Million-Year-Old “Feather Dragon” Fossil Reveals New Species With Incredibly Long Tail Feathers

clock-iconMay 27, 2026

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Newly Discovered Dinosaur's "Sail-Like" Structure Along Its Back May Have Attracted MatesAn artist's impression of Istiorachis. The animal is seen standing on profile, facing the left of the image. It is set on what looks like a sandy beach with driftwood surrounding it. The background shows a lush forest and there are some flying creatures in the sky. The dinosaur itself has a long structure stretching from the back of its head to its tail. The structure gradually rises as it moves along, reaching its height above the animal's hips and them sinking slightly as it moves along the tail.

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Newly Discovered Dinosaur's "Sail-Like" Structure Along Its Back May Have Attracted MatesAn artist's impression of Istiorachis. The animal is seen standing on profile, facing the left of the image. It is set on what looks like a sandy beach with driftwood surrounding it. The background shows a lush forest and there are some flying creatures in the sky. The dinosaur itself has a long structure stretching from the back of its head to its tail. The structure gradually rises as it moves along, reaching its height above the animal's hips and them sinking slightly as it moves along the tail.
nature-iconPalaeontology

Newly Discovered Dinosaur's "Sail-Like" Structure Along Its Back May Have Attracted Mates

clock-iconAugust 22, 2025

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Smart Is Sexy: More Intelligent Mosquitofish Males Sire More OffspringMosquitofish look calm in a still, but their sexlives are wild, but it seems being smart helps.

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Smart Is Sexy: More Intelligent Mosquitofish Males Sire More OffspringMosquitofish look calm in a still, but their sexlives are wild, but it seems being smart helps.
nature-iconanimals

Smart Is Sexy: More Intelligent Mosquitofish Males Sire More Offspring

clock-iconMarch 3, 2025
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For Dusky Pipefish, Males Get Pregnant And Sex Chromosomes Don't ExistVery small skinny pipefish with a close up of its head and long snout on a black background.

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For Dusky Pipefish, Males Get Pregnant And Sex Chromosomes Don't ExistVery small skinny pipefish with a close up of its head and long snout on a black background.
nature-iconanimals

For Dusky Pipefish, Males Get Pregnant And Sex Chromosomes Don't Exist

clock-iconJanuary 7, 2025
share96

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Can Peacocks Fly?a peacock with its feathers spread

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Can Peacocks Fly?a peacock with its feathers spread
nature-iconanimals

Can Peacocks Fly?

clock-iconMarch 8, 2024
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share83

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Small Balled Glass Frogs Make Better FathersTropical glass frog

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Small Balled Glass Frogs Make Better FathersTropical glass frog
nature-iconanimals

Small Balled Glass Frogs Make Better Fathers

clock-iconFebruary 26, 2024
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Why Does This Monkey Have Such A Giant Nose? As Usual, It's All About Sexarticle image

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Why Does This Monkey Have Such A Giant Nose? As Usual, It's All About Sexarticle image
nature-iconNature

Why Does This Monkey Have Such A Giant Nose? As Usual, It's All About Sex

clock-iconFebruary 26, 2018
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We Just Observed A New Species Evolving Right In Front Of Usarticle image

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We Just Observed A New Species Evolving Right In Front Of Usarticle image
nature-iconNature

We Just Observed A New Species Evolving Right In Front Of Us

clock-iconNovember 24, 2017
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Male Peacocks Spend Most Their Time Checking Out Guys And Ignoring Femalesarticle image

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Male Peacocks Spend Most Their Time Checking Out Guys And Ignoring Femalesarticle image
nature-iconNature

Male Peacocks Spend Most Their Time Checking Out Guys And Ignoring Females

clock-iconMarch 16, 2017

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The Violent World Of Mongoose Gang Warsarticle image

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The Violent World Of Mongoose Gang Warsarticle image
nature-iconNature

The Violent World Of Mongoose Gang Wars

clock-iconMarch 1, 2017

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Glittery Feathers Found On 120-Million-Year Old Flying Dinosaurarticle image

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Glittery Feathers Found On 120-Million-Year Old Flying Dinosaurarticle image
nature-iconNature

Glittery Feathers Found On 120-Million-Year Old Flying Dinosaur

clock-iconNovember 15, 2016

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Animals With Glowing Courtship Displays Are More Likely To Diversifyarticle image

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Animals With Glowing Courtship Displays Are More Likely To Diversifyarticle image
nature-iconNature

Animals With Glowing Courtship Displays Are More Likely To Diversify

clock-iconJune 29, 2016

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New Praying Mantis Species Described Based On Female Genitalia For The First Timearticle image

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New Praying Mantis Species Described Based On Female Genitalia For The First Timearticle image
nature-iconNature

New Praying Mantis Species Described Based On Female Genitalia For The First Time

clock-iconJune 2, 2016

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Why Do Male Fruit Flies Have Humongous Sperm?article image

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Why Do Male Fruit Flies Have Humongous Sperm?article image
nature-iconNature

Why Do Male Fruit Flies Have Humongous Sperm?

clock-iconMay 26, 2016

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Researchers Identify "Redness" Gene In Birdsarticle image

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Researchers Identify "Redness" Gene In Birdsarticle image
nature-iconNature

Researchers Identify "Redness" Gene In Birds

clock-iconMay 21, 2016